PCIE 1x to 2 Port/4 Port RS232 Serial Card DB9Pin Port Adapter Card PCI-E PCI Express Expansion Card for PC Desktop COM Card

Product Name : PCI-E(x1) RS232 Card

Product Model ：TXB174

Main control chip: AX99100 chip 

Slot type: desktop PCI-Ex1 slot, compatible with x4x8x16 slots 

Transfer interface: 4 RS232 serial ports on the outside 

Interface speed: 1MBytes/sec 

Applicable systems: DOS, Windows 8/7/Vista/XP/2000/Server 2003-2008 32/62-bit, Linux & Mac OS/X 10.5 and other systems