Features Compliant with PCI Base Specification 1.1. Supports x1, x2, x4, x8, x16 () PCI Bus connector keys. Support 4 x UART serial ports Built-in 16C950 compatible UART Specifacation -232 I/O series, a line of PCI Multi-port Serial Communication Board is designed to meet PCI Base Specification Ver1.1 (Compliable with PCI General 2 Specification).supports 5VDC or 12DV of power from each serial port via 9 pin output. It 's convenient for users connecting serial devices without addition external power supply.This board offers a and high performance solution for serial multi-port communications. 128-bype deep transmit/receive FIFOs Data transfer rate up to 230400bps Optional -232 signal or power output to serial device Provides 5VDC or 12VDC power output via pin 1 Provides 5VDC or 12VDC power output via pin 9 TTL UART for Dedicated Serial Port Selectable TTL voltage level UART for TTL Keyboard etc Plug-n-Play, I/O address and assigned by BIOS. Application This board serial ports for connecting terminals,modems, printers, scanners, cash registers,bar code , keypads,numeric displays, electrical scales, data acquisition equipment, and other serial devices for the PC and compatible . Software requirement Windows98/98e//10 Windows 32bit 2000/XP/2003 Server/Vista/7 & Windows 64bit XP/2003 Server/Vista/7/8 Linux 2.4 & 2.6 One available PCI slot Color: green : Plastic+Metal Package Contents: 1 x PCIE Adapter Card 2 x short board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.