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Serial Adapters
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2 In 1 DB9 RS232 to RS485 Serial Converter 9Pin to 5Pin Screw Terminal Block RS232 to 3.3V/5V Interface Signal Adapter ZSANBDEZW-1PCS-PCM-KW-473
2 In 1 DB9 RS232 to RS485 Serial Converter 9Pin to 5Pin Screw Terminal Block RS232 to 3.3V/5V Interface Signal Adapter
£64.29
Shipping: Free
Amazon Marketplace - kongkangning12

Siig JJ-P04621-S7 interface cards/adapter Internal Serial 94886
SIIGs DP Quartet Serial 550 PCI is an excellent solution designed to add four additional 9-pin RS232 serial ports for connecting multiple serial-based devices to your PCI-enabled desktop computer. This 4-port serial adapter card comes with four high-speed 16550 UART serial ports supporting data transfer rate of up to 230Kb/s. The serial ports can work as either standard RS232 ports or can be independently configured as 5V /12V power outputs for devices that require power such as handheld scanners table scanners and POS displays. The DP Quartet Serial 550 PCI features IRQ sharing to reduce IRQ conflicts built-in 32-byte FIFO buffers to dramatically increase data transmit/receive speed especially under Windows multitasking environment and PME (Power Management Event) that allows device to request a change in system power state (wake up system). It features dual-profile design to work in standard-height and low-profile chassis with the included brackets and Universal PCI card support to work with 32-/64-bit 3.3v/5v PCI and PCI-X slot. Industry standards supported by this CyberPro powered serial adapter card include PCI v2.2 universal card standard PCI-X & 64-bit compatible RoHS and FCC Class B (DoC) & CE regulatory approved. Backed by SIIGs limited lifetime warranty and compatible with a wide variety of Windows operating systems the DP Quartet Serial 550 PCI is the best-value serial adapter card in the market for connecting a wide variety of serial devices.
£98.07
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Quzo UK

Siig DP 4-Port Industrial RS-232 Universal PCI interface cards/adapter Internal Serial 94896
SIIGs DP 4-Port Industrial RS-232 Universal PCI Adapter Card with 3KV Isolation is a high performance serial adapter card designed to easily add 4 RS-232 serial ports with 15KV ESD protection to your PCI enabled desktop computer. Its serial interface delivers data transfer rates up to 921.6Kb/s and features 15KVDC ESD protection to protect both connected devices and the board itself from Electro Static Discharge. This dual profile universal PCI adapter card connects to your serial devices with space saving DB44 to 4-port DB9 cable and comes with a spare low profile bracket to install in standard height or low-profile systems to offer the utmost flexibility in system chassis installation.
£148.18
Shipping: Free
Quzo UK
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