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USB to Serial Adapters
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Fluke OC4USB (2166266)
Safety interface cable for ScopeMeters and power and energy analyzersOptical isolation enables voltage-free measurements on mains voltagesConnection to standard USB interface on PCCompatible with Fluke Series 120, ScopeMeter Series 190, Series 43, 43B, and 430 Power Quality AnalyzersCable length (extended): 1.5 mSupports Windows Vista/Windows XP/2000/Me/98 SE or newerEnables safe and easy data transfer between device and PC
£169.20
Shipping: Free
Amazon

StarTech.com 13ft/4m 2-Port USB to Serial Adapter Cable, COM Retention, FTDI, USB-A to DB9 RS232, Changeable DB9 Screws/Nuts 2P6FFC-USB-SERIAL
INTERCHANGEABLE NUTS & SCREWS: Secure the adapter to serial devices using the pre-installed DB9 screws, or install the included DB9 Nuts for compatibility with serial peripheral devices/cables; Add two DB9 RS-232 ports to a computer, using a USB-A port LED INDICATORS: Each port has dedicated Transmit and Receive LED indicators offering real-time monitoring of port activity, while the USB LED indicates when the adapter is successfully recognized by the desktop or laptop COMPATIBILITY: Works with Windows, macOS, ChromeOS, and Linux; Drivers auto-install in Windows 7+, macOS 10.15+, and Linux; COM retention enables the COM port to automatically re-assign if the cable is disconnected/reconnected or if the system is rebooted BUILD QUALITY: One-piece molded TPE housing and Level-4 ESD protection (15kV air/8kV contact) enhance reliability and longevity; Copper shielding minimizes EMI/RFI interference; Gold-plated connectors; Extended operating temperature of -40°C to 80°C TECH SPECS: 2x DB9 RS232 Ports; 6.5ft (2m) cable length between hub and peripherals (13ft/4m total product length); FTDI FT2232H Chipset; Max Baud Rate: 921.6Kbps; 4KB FIFO; Odd/Even/Mark/Space/None Parity Modes; 7 or 8 Data Bits; 1 or 2 Stop bits
£52.88
Shipping: Free
Amazon Marketplace - DirectfromStarTech

StarTech.com 13ft/4m 2-Port USB to Serial Adapter Cable, COM Retention, FTDI, USB-A to DB9 RS232, Changeable DB9 Screws/Nuts 2P6FFC-USB-SERIAL
INTERCHANGEABLE NUTS & SCREWS: Secure the adapter to serial devices using the pre-installed DB9 screws, or install the included DB9 Nuts for compatibility with serial peripheral devices/cables; Add two DB9 RS-232 ports to a computer, using a USB-A port LED INDICATORS: Each port has dedicated Transmit and Receive LED indicators offering real-time monitoring of port activity, while the USB LED indicates when the adapter is successfully recognized by the desktop or laptop COMPATIBILITY: Works with Windows, macOS, ChromeOS, and Linux; Drivers auto-install in Windows 7+, macOS 10.15+, and Linux; COM retention enables the COM port to automatically re-assign if the cable is disconnected/reconnected or if the system is rebooted BUILD QUALITY: One-piece molded TPE housing and Level-4 ESD protection (15kV air/8kV contact) enhance reliability and longevity; Copper shielding minimizes EMI/RFI interference; Gold-plated connectors; Extended operating temperature of -40°C to 80°C TECH SPECS: 2x DB9 RS232 Ports; 6.5ft (2m) cable length between hub and peripherals (13ft/4m total product length); FTDI FT2232H Chipset; Max Baud Rate: 921.6Kbps; 4KB FIFO; Odd/Even/Mark/Space/None Parity Modes; 7 or 8 Data Bits; 1 or 2 Stop bits
£105.59
Shipping: Free
Amazon

StarTech 6ft (2m) USB to Null Modem Serial Adapter Cable, COM Retention, FTDI, USB-A to RS232, LED Indicators, Changeable DB9 Screws Nuts 1P6FFCN-USB-SERIAL
INTERCHANGEABLE NUTS & SCREWS: Secure the adapter to a serial device using the pre-installed DB9 screws, or install the included DB9 Nuts for compatibility with serial peripheral devices/cables; Add a null modem RS232 port to a computer using a USB-A port LED INDICATORS: Transmit and Receive LED indicators offer real-time monitoring of port activity, while the USB LED indicates when the adapter is successfully recognized by the desktop or laptop COMPATIBILITY: Works with Windows, macOS, ChromeOS, and Linux; Drivers auto-install in Windows 7+, macOS 10.15+, and Linux; COM retention enables the COM port to automatically re-assign; Resolve DCE/DTE conflicts without using cross-wired cables/adapters BUILD QUALITY: Solid one-piece molded TPE housing and Level-4 ESD protection (15kV air/8kV contact) enhance reliability and longevity; Copper shielding minimizes EMI/RFI interference; Gold-plated connectors; Extended operating temperature of -40°C to 80°C TECH SPECS: 6.6-foot (2-meter) Cable Length; FTDI FT232R Chipset; Max Baud Rate: 921.6Kbps; 128 Byte RX and 256 Byte TX FIFO; Odd/Even/Mark/Space/None Parity Modes; 7 or 8 Data Bits; 1 or 2 Stop bits
£31.44
Shipping: Free
Amazon

StarTech.com 2ft (60cm) 2-Port USB to Serial Adapter Cable, COM Retention, FTDI, USB to DB9 RS232, Changeable DB9 Screws/Nuts 2P1FFC-USB-SERIAL
INTERCHANGEABLE NUTS & SCREWS: Secure the adapter to serial devices using the pre-installed DB9 nuts, or install the included DB9 screws for compatibility with serial peripheral devices/cables; Add two DB9 RS-232 ports to a computer, using a USB-A port LED INDICATORS: Each port has dedicated Transmit and Receive LED indicators offering real-time monitoring of port activity, while the USB LED indicates when the adapter is successfully recognized by the desktop or laptop COMPATIBILITY: Works with Windows, macOS, ChromeOS, and Linux; Drivers auto-install in Windows 7+, macOS 10.15+, and Linux; COM retention enables the COM port to automatically re-assign if the cable is disconnected/reconnected or if the system is rebooted BUILD QUALITY: One-piece molded TPE housing and Level-4 ESD protection (15kV air/8kV contact) enhance reliability and longevity; Copper shielding minimizes EMI/RFI interference; Gold-plated connectors; Extended operating temperature of -40°C to 80°C TECH SPECS: 2x DB9 RS232 Ports; 1ft (30.5cm) cable length between hub and peripherals (2ft/61cm total product length); FTDI FT2232H Chipset; Max Baud Rate: 921.6Kbps; 4KB FIFO; Odd/Even/Mark/Space/None Parity Modes; 7 or 8 Data Bits; 1 or 2 Stop bits
£58.04
Shipping: Free
Amazon

StarTech 3ft (1m) USB to Serial Adapter Cable, COM Retention, FTDI, USB-A to DB9 RS232, LED Indicators, Interchangeable DB9 Screws Nuts 1P3FFCB-USB-SERIAL
INTERCHANGEABLE NUTS & SCREWS: Secure the adapter to a serial device using the pre-installed DB9 screws, or install the included DB9 Nuts for compatibility with serial peripheral devices/cables; Add a DB9 RS-232 port to a computer, using a USB-A port LED INDICATORS: Transmit and Receive LED indicators offer real-time monitoring of port activity, while the USB LED indicates when the adapter is successfully recognized by the desktop or laptop COMPATIBILITY: Works with Windows, macOS, ChromeOS, and Linux; Drivers auto-install in Windows 7+, macOS 10.15+, and Linux; COM retention enables the COM port to automatically re-assign if the cable is disconnected/reconnected or if the system is rebooted BUILD QUALITY: Solid one-piece molded TPE housing and Level-4 ESD protection (15kV air/8kV contact) enhance reliability and longevity; Copper shielding minimizes EMI/RFI interference; Gold-plated connectors; Extended operating temperature of -40°C to 80°C TECH SPECS: 3.3ft (1m) Cable Length; FTDI FT232R Chipset; Max Baud Rate: 921.6Kbps; 128 Byte Rx and 256 Byte Tx FIFO; Odd/Even/Mark/Space/None Parity Modes; 7 or 8 Data Bits; 1 or 2 Stop bits
£32.67
Shipping: Free
Amazon

StarTech USB to Serial Adapter - 2 Port - Wall Mount - Din Rail Clips - Industrial - COM Port Retention - FTDI - DB9 , TAA (ICUSB2322I)
2-port USB to RS232 serial adapter Rugged metal construction Wall-mountable, with included DIN Rail clips COM retention: COM Port assignments maintained across reboot Baud Rate up to 921.6 Kbps
£68.27
Shipping: Free
Amazon Marketplace - DirectfromStarTech

StarTech 10ft (3m) USB to Null Modem Serial Adapter Cable, COM Retention, FTDI, USB-A to RS232, LED Indicators, Changeable DB9 Screws Nuts 1P10FFCN-USB-SERIAL
INTERCHANGEABLE NUTS & SCREWS: Secure the adapter to a serial device using the pre-installed DB9 screws, or install the included DB9 Nuts for compatibility with serial peripheral devices/cables; Add a null modem RS232 port to a computer using a USB-A port LED INDICATORS: Transmit and Receive LED indicators offer real-time monitoring of port activity, while the USB LED indicates when the adapter is successfully recognized by the desktop or laptop COMPATIBILITY: Works with Windows, macOS, ChromeOS, and Linux; Drivers auto-install in Windows 7+, macOS 10.15+, and Linux; COM retention enables the COM port to automatically re-assign; Resolve DCE/DTE conflicts without using cross-wired cables/adapters BUILD QUALITY: Solid one-piece molded TPE housing and Level-4 ESD protection (15kV air/8kV contact) enhance reliability and longevity; Copper shielding minimizes EMI/RFI interference; Gold-plated connectors; Extended operating temperature of -40°C to 80°C TECH SPECS: 10ft (3m) Cable Length; FTDI FT232R Chipset; Max Baud Rate: 921.6Kbps; 128 Byte RX and 256 Byte TX FIFO; Odd/Even/Mark/Space/None Parity Modes; 7 or 8 Data Bits; 1 or 2 Stop bits
£41.55
Shipping: Free
Amazon

StarTech 1ft (30cm) USB to Serial Adapter Cable, COM Retention, FTDI, USB-A to DB9 RS232, LED Indicators, Interchangeable DB9 Screws Nuts 1P1FFC-USB-SERIAL
INTERCHANGEABLE NUTS & SCREWS: Secure the adapter to a serial device using the pre-installed DB9 nuts, or install the included DB9 screws for compatibility with serial peripheral devices/cables; Add a DB9 RS-232 port to a computer, using a USB-A port LED INDICATORS: Transmit and Receive LED indicators offer real-time monitoring of port activity, while the USB LED indicates when the adapter is successfully recognized by the desktop or laptop COMPATIBILITY: Works with Windows, macOS, ChromeOS, and Linux; Drivers auto-install in Windows 7+, macOS 10.15+, and Linux; COM retention enables the COM port to automatically re-assign if the cable is disconnected/reconnected or if the system is rebooted BUILD QUALITY: Solid one-piece molded TPE housing and Level-4 ESD protection (15kV air/8kV contact) enhance reliability and longevity; Copper shielding minimizes EMI/RFI interference; Gold-plated connectors; Extended operating temperature of -40°C to 80°C TECH SPECS: 1-foot (30-centimeter) Cable Length; FTDI FT232R Chipset; Max Baud Rate: 921.6Kbps; 128 Byte RX and 256 Byte TX FIFO; Odd/Even/Mark/Space/None Parity Modes; 7 or 8 Data Bits; 1 or 2 Stop bits
£30.38
Shipping: Free
Amazon

StarTech 6ft (2m) USB to Serial Adapter Cable, COM Retention, FTDI, USB-A to DB9 RS232, LED Indicators, Interchangeable DB9 Screws Nuts 1P6FFC-USB-SERIAL
INTERCHANGEABLE NUTS & SCREWS: Secure the adapter to a serial device using the pre-installed DB9 screws, or install the included DB9 Nuts for compatibility with serial peripheral devices/cables; Add a DB9 RS-232 port to a computer, using a USB-A port LED INDICATORS: Transmit and Receive LED indicators offer real-time monitoring of port activity, while the USB LED indicates when the adapter is successfully recognized by the desktop or laptop COMPATIBILITY: Works with Windows, macOS, ChromeOS, and Linux; Drivers auto-install in Windows 7+, macOS 10.15+, and Linux; COM retention enables the COM port to automatically re-assign if the cable is disconnected/reconnected or if the system is rebooted BUILD QUALITY: Solid one-piece molded TPE housing and Level-4 ESD protection (15kV air/8kV contact) enhance reliability and longevity; Copper shielding minimizes EMI/RFI interference; Gold-plated connectors; Extended operating temperature of -40°C to 80°C TECH SPECS: 6.6-foot (2-meter) Cable Length; FTDI FT232R Chipset; Max Baud Rate: 921.6Kbps; 128 Byte RX and 256 Byte TX FIFO; Odd/Even/Mark/Space/None Parity Modes; 7 or 8 Data Bits; 1 or 2 Stop bits
£34.50
Shipping: Free
Amazon

StarTech 3ft (1m) USB to Null Modem Serial Adapter Cable, COM Retention, FTDI, USB-A to RS232, LED Indicators, Changeable DB9 Screws Nuts 1P3FFCNB-USB-SERIAL
INTERCHANGEABLE NUTS & SCREWS: Secure the adapter to a serial device using the pre-installed DB9 screws, or install the included DB9 Nuts for compatibility with serial peripheral devices/cables; Add a null modem RS232 port to a computer using a USB-A port LED INDICATORS: Transmit and Receive LED indicators offer real-time monitoring of port activity, while the USB LED indicates when the adapter is successfully recognized by the desktop or laptop COMPATIBILITY: Works with Windows, macOS, ChromeOS, and Linux; Drivers auto-install in Windows 7+, macOS 10.15+, and Linux; COM retention enables the COM port to automatically re-assign; Resolve DCE/DTE conflicts without using cross-wired cables/adapters BUILD QUALITY: Solid one-piece molded TPE housing and Level-4 ESD protection (15kV air/8kV contact) enhance reliability and longevity; Copper shielding minimizes EMI/RFI interference; Gold-plated connectors; Extended operating temperature of -40°C to 80°C TECH SPECS: 3.3ft (1m) Cable Length; FTDI FT232R Chipset; Max Baud Rate: 921.6Kbps; 128 Byte RX and 256 Byte TX FIFO; Odd/Even/Mark/Space/None Parity Modes; 7 or 8 Data Bits; 1 or 2 Stop bits
£31.74
Shipping: Free
Amazon

StarTech 10ft (3m) USB to Serial Adapter Cable, COM Retention, FTDI IC, USB-A to DB9 RS232, LED Indicators, Interchangeable DB9 Screws Nuts 1P10FFC-USB-SERIAL
INTERCHANGEABLE NUTS & SCREWS: Secure the adapter to a serial device using the pre-installed DB9 screws, or install the included DB9 Nuts for compatibility with serial peripheral devices/cables; Add a DB9 RS-232 port to a computer, using a USB-A port LED INDICATORS: Transmit and Receive LED indicators offer real-time monitoring of port activity, while the USB LED indicates when the adapter is successfully recognized by the desktop or laptop COMPATIBILITY: Works with Windows, macOS, ChromeOS, and Linux; Drivers auto-install in Windows 7+, macOS 10.15+, and Linux; COM retention enables the COM port to automatically re-assign if the cable is disconnected/reconnected or if the system is rebooted BUILD QUALITY: Solid one-piece molded TPE housing and Level-4 ESD protection (15kV air/8kV contact) enhance reliability and longevity; Copper shielding minimizes EMI/RFI interference; Gold-plated connectors; Extended operating temperature of -40°C to 80°C TECH SPECS: 10ft (3m) Cable Length; FTDI FT232R Chipset; Max Baud Rate: 921.6Kbps; 128 Byte RX and 256 Byte TX FIFO; Odd/Even/Mark/Space/None Parity Modes; 7 or 8 Data Bits; 1 or 2 Stop bits
£42.57
Shipping: Free
Amazon

ESP32-CAM Development Board Bluetooth Module with OV2640 Camera USB Serial Adapter(TR8X3) BMMBFFLME-TR8X3
Wide Compatibility: Fully compatible with making it easy to integrate into your existing projects Rich Interfaces: Providing flexible connectivity for sensors, displays, and motors Stable Communication: For stable signal transmission in smart home and IoT applications Beginner-Friendly Resources: Comes with a comprehensive user manual and step-by-step tutorials. Technical support and driver downloads are available to help you get started quickly
£58.45
Shipping: Free
Amazon Marketplace - taizhoumanjingwangluokejiyouxiangongsi

Torribaly 3X Industrial Isolated USB to 4CH RS232 Converter USB to Serial Adapter FT4232HL Chip Wind/Linux/Android,RS232 Male Port OPC-PTNN7RZ-NEW
Features: Adopts FT4232HL chip, fast communicating, stable and reliable, better compatibility. Supports USB to 4-ch isolated RS232, convenient for...
£106.59
Shipping: Free
OnBuy

ESP32-CAM Development Board Bluetooth Module with OV2640 Camera USB Serial Adapter(Tr8X1.5) BMMBFFLME-TR8X1.5
Wide Compatibility: Fully compatible with making it easy to integrate into your existing projects Rich Interfaces: Providing flexible connectivity for sensors, displays, and motors Stable Communication: For stable signal transmission in smart home and IoT applications Beginner-Friendly Resources: Comes with a comprehensive user manual and step-by-step tutorials. Technical support and driver downloads are available to help you get started quickly
£50.49
Shipping: Free
Amazon Marketplace - taizhoumanjingwangluokejiyouxiangongsi

StarTech.com 2ft (60cm) 2-Port USB to Serial Adapter Cable, COM Retention, FTDI, USB to DB9 RS232, Changeable DB9 Screws/Nuts B0CQMFKKFX
INTERCHANGEABLE NUTS & SCREWS: Secure the adapter to serial devices using the pre-installed DB9 nuts, or install the included DB9 screws for compatibility with serial peripheral devices/cables; Add two DB9 RS-232 ports to a computer, using a USB-A port LED INDICATORS: Each port has dedicated Transmit and Receive LED indicators offering real-time monitoring of port activity, while the USB LED indicates when the adapter is successfully recognized by the desktop or laptop COMPATIBILITY: Works with Windows, macOS, ChromeOS, and Linux; Drivers auto-install in Windows 7+, macOS 10.15+, and Linux; COM retention enables the COM port to automatically re-assign if the cable is disconnected/reconnected or if the system is rebooted BUILD QUALITY: One-piece molded TPE housing and Level-4 ESD protection (15kV air/8kV contact) enhance reliability and longevity; Copper shielding minimizes EMI/RFI interference; Gold-plated connectors; Extended operating temperature of -40°C to 80°C TECH SPECS: 2x DB9 RS232 Ports; 1ft (30.5cm) cable length between hub and peripherals (2ft/61cm total product length); FTDI FT2232H Chipset; Max Baud Rate: 921.6Kbps; 4KB FIFO; Odd/Even/Mark/Space/None Parity Modes; 7 or 8 Data Bits; 1 or 2 Stop bits
£56.90
Shipping: Free
Amazon

StarTech 1ft (30cm) USB to Null Modem Serial Adapter Cable, COM Retention, FTDI, USB-A to RS232, LED Indicators, Changeable DB9 Nuts Screws B0DMTJBLWR
INTERCHANGEABLE NUTS & SCREWS: Secure the adapter to a serial device using the pre-installed DB9 nuts, or install the included DB9 screws for compatibility with serial peripheral devices/cables; Add a null modem RS232 port to a computer using a USB-A port LED INDICATORS: Transmit and Receive LED indicators offer real-time monitoring of port activity, while the USB LED indicates when the adapter is successfully recognized by the desktop or laptop COMPATIBILITY: Works with Windows, macOS, ChromeOS, and Linux; Drivers auto-install in Windows 7+, macOS 10.15+, and Linux; COM retention enables the COM port to automatically re-assign; Resolve DCE/DTE conflicts without using cross-wired cables/adapters BUILD QUALITY: Solid one-piece molded TPE housing and Level-4 ESD protection (15kV air/8kV contact) enhance reliability and longevity; Copper shielding minimizes EMI/RFI interference; Gold-plated connectors; Extended operating temperature of -40°C to 80°C TECH SPECS: 1-foot (30-centimeter) Cable Length; FTDI FT232R Chipset; Max Baud Rate: 921.6Kbps; 128 Byte RX and 256 Byte TX FIFO; Odd/Even/Mark/Space/None Parity Modes; 7 or 8 Data Bits; 1 or 2 Stop bits
£25.94
Shipping: Free
Amazon

StarTech 10ft (3m) USB to Serial Adapter Cable, COM Retention, FTDI IC, USB-A to DB9 RS232, LED Indicators, Interchangeable DB9 Screws Nuts B0CQMRS4CD
INTERCHANGEABLE NUTS & SCREWS: Secure the adapter to a serial device using the pre-installed DB9 screws, or install the included DB9 Nuts for compatibility with serial peripheral devices/cables; Add a DB9 RS-232 port to a computer, using a USB-A port LED INDICATORS: Transmit and Receive LED indicators offer real-time monitoring of port activity, while the USB LED indicates when the adapter is successfully recognized by the desktop or laptop COMPATIBILITY: Works with Windows, macOS, ChromeOS, and Linux; Drivers auto-install in Windows 7+, macOS 10.15+, and Linux; COM retention enables the COM port to automatically re-assign if the cable is disconnected/reconnected or if the system is rebooted BUILD QUALITY: Solid one-piece molded TPE housing and Level-4 ESD protection (15kV air/8kV contact) enhance reliability and longevity; Copper shielding minimizes EMI/RFI interference; Gold-plated connectors; Extended operating temperature of -40°C to 80°C TECH SPECS: 10ft (3m) Cable Length; FTDI FT232R Chipset; Max Baud Rate: 921.6Kbps; 128 Byte RX and 256 Byte TX FIFO; Odd/Even/Mark/Space/None Parity Modes; 7 or 8 Data Bits; 1 or 2 Stop bits
£42.69
Shipping: Free
Amazon

Unbranded USB to TTL UART Serial Adapter Converter Cable 6 Pin 0.1 Inch Pitch Female Socket Chip 5V 3.3V for Windows 10 8 7 XP Vista
1. FTDI USB to TTL UART 3.3V Logic Level Adapter Cable provides seamless connectivity with a USB to 6 Pin TX, RX, GND, VCC (5V), CTS, and RTS Female...
£53.11
Shipping: Free
OnBuy

Gearmo Industrial 8 Port USB to Serial Adapter with FTDI Chipset, RX/TX LED Indicators, DIN Rail & Surface Mounting Brackets, Windows 11, 10, 8, 7 Support, Includes USB-A Cable B08GTXBCDF
INDUSTRIAL FUNCTIONALITY: This 8-Port USB to Serial Hub with a FTDI chipset supports automatic handshake, easily connecting DB9 point of sale systems, barcode scanners, and industrial devices to your PC. STATUS LED INDICATORS: Features high-visibility LEDs to track hub power and TX/RX data activity on per port. This built-in signal tester provides immediate visual confirmation of active communications for all your RS-232 peripherals. EASY SETUP: This RS-232 Adapter connects in seconds with a bus-powered USB interface that eliminates the need for bulky power bricks. Robust COM Port Retention ensures your legacy devices stay mapped to the correct port every time you plug in. DURABLE & MOUNTABLE: Housed in a metal chassis, this serial hub is built for demanding environments. Includes all hardware for secure surface, wall, or DIN-rail mounting, ensuring stable installations in server rooms, factories, or mobile workstations. FLEXIBLE DUAL-POWER MODES: This DB9 serial converter is standard self-powered via USB for mobile use. For high-draw applications, connect the terminal block supporting 9~48 VDC variable voltage input for stable, pass-through power across all serial lines. PLUG & PLAY COMPATIBILITY: This RS232 Hub Works out of the box with Windows 11, 10, 8, 7, Linux, and macOS. High-performance FTDI drivers make it the ideal solution for legacy industrial software and modern enterprise workstations alike.
£138.86
Shipping: £8.91
Amazon Marketplace - Amazon US

StarTech 3ft (1m) USB to Null Modem Serial Adapter Cable, COM Retention, FTDI, USB-A to RS232, LED Indicators, Changeable DB9 Screws Nuts B0CQZ4K3YZ
INTERCHANGEABLE NUTS & SCREWS: Secure the adapter to a serial device using the pre-installed DB9 screws, or install the included DB9 Nuts for compatibility with serial peripheral devices/cables; Add a null modem RS232 port to a computer using a USB-A port LED INDICATORS: Transmit and Receive LED indicators offer real-time monitoring of port activity, while the USB LED indicates when the adapter is successfully recognized by the desktop or laptop COMPATIBILITY: Works with Windows, macOS, ChromeOS, and Linux; Drivers auto-install in Windows 7+, macOS 10.15+, and Linux; COM retention enables the COM port to automatically re-assign; Resolve DCE/DTE conflicts without using cross-wired cables/adapters BUILD QUALITY: Solid one-piece molded TPE housing and Level-4 ESD protection (15kV air/8kV contact) enhance reliability and longevity; Copper shielding minimizes EMI/RFI interference; Gold-plated connectors; Extended operating temperature of -40°C to 80°C TECH SPECS: 3.3ft (1m) Cable Length; FTDI FT232R Chipset; Max Baud Rate: 921.6Kbps; 128 Byte RX and 256 Byte TX FIFO; Odd/Even/Mark/Space/None Parity Modes; 7 or 8 Data Bits; 1 or 2 Stop bits
£32.59
Shipping: Free
Amazon

StarTech 3ft (1m) USB to Serial Adapter Cable, COM Retention, FTDI, USB-A to DB9 RS232, LED Indicators, Interchangeable DB9 Screws Nuts B0CQ8V2P7V
INTERCHANGEABLE NUTS & SCREWS: Secure the adapter to a serial device using the pre-installed DB9 screws, or install the included DB9 Nuts for compatibility with serial peripheral devices/cables; Add a DB9 RS-232 port to a computer, using a USB-A port LED INDICATORS: Transmit and Receive LED indicators offer real-time monitoring of port activity, while the USB LED indicates when the adapter is successfully recognized by the desktop or laptop COMPATIBILITY: Works with Windows, macOS, ChromeOS, and Linux; Drivers auto-install in Windows 7+, macOS 10.15+, and Linux; COM retention enables the COM port to automatically re-assign if the cable is disconnected/reconnected or if the system is rebooted BUILD QUALITY: Solid one-piece molded TPE housing and Level-4 ESD protection (15kV air/8kV contact) enhance reliability and longevity; Copper shielding minimizes EMI/RFI interference; Gold-plated connectors; Extended operating temperature of -40°C to 80°C TECH SPECS: 3.3ft (1m) Cable Length; FTDI FT232R Chipset; Max Baud Rate: 921.6Kbps; 128 Byte Rx and 256 Byte Tx FIFO; Odd/Even/Mark/Space/None Parity Modes; 7 or 8 Data Bits; 1 or 2 Stop bits
£33.34
Shipping: Free
Amazon

StarTech.com 8 Port USB to Serial RS232 Adapter - Wall Mount - Din Rail - COM Port Retention - FTDI USB to DB9 RS232 Hub, TAA (ICUSB2328I)
INDUSTRIAL STRENGTH: Built to withstand harsh environments, this 8 port USB to serial RS232 adapter has a rugged all-metal enclosure for added durability in industrial settings COM RETENTION CAPABILITIES: For added convenience, this FTDI USB to DB9 RS232 hub features COM retention so COM port assignments are maintained during reboots PLUG AND PLAY INSTALLATION: This DB9 serial converter is powered by an available USB port / cable so no external power adapter is required INSTALLATION OPTIONS: This USB serial adapter has integrated wall mount brackets and included DIN Rail clips for versatile mounting options RELIABLE SUPPORT: Backed by a StarTech.com 2-year warranty, this 8 port FTDI USB to serial DB9 RS232 adapter has free lifetime technical support
£185.55
Shipping: Free
Amazon Marketplace - DirectfromStarTech

StarTech.com 4 Port USB to Serial RS232 Adapter - Wall Mount - Din Rail - COM Port Retention - FTDI USB to DB9 RS232 Hub, TAA (ICUSB2324I)
INDUSTRIAL STRENGTH: Built to withstand harsh environments, this 4 port USB to serial RS232 adapter has a rugged all-metal enclosure for added durability in industrial settings COM RETENTION CAPABILITIES: For added convenience, this FTDI USB to DB9 RS232 hub features COM retention so COM port assignments are maintained during reboots PLUG AND PLAY INSTALLATION: This DB9 serial converter is powered by an available USB port / cable so no external power adapter is required INSTALLATION OPTIONS: This USB serial adapter has integrated wall mount brackets and included DIN Rail clips for versatile mounting options THE STARTECH.COM ADVANTAGE: StarTech.com offers a 2-year warranty and free lifetime technical support on this USB to serial RS232 adapter and has been the IT pro’s choice since 1985
£104.64
Shipping: Free
Amazon Marketplace - DirectfromStarTech

DeLOCK 64055 USB Type-A to Serial RS-422/485 DB9 Adapter with Surge Protection TZ5402014BG-UK-021V
Chipset: FTDI FT232R Automatic data flow control Data transfer rate up to 921.6 Kbps 3 x LED display for power and activity Colour: blue Case material: plastic
£78.87
Shipping: £15.26
Amazon Marketplace - VANDIN
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