PCI-E to 6 serial port RS-232COM extension card adapter riser card
Features:
Automatically assign IRQ and I/O addresses
No switches or jumpers, easy to set with software
32-bit bus design, supporting PCI 2.1 specifications
Adopting high-speed I/O controllers
One machine can connect multiple serial ports
Transmission rate up to 1 Mbytes/sec
Support Windows95/98/98SE/2000/ME/NT4.0/XP/WIN7/WIN8/WIN10,Linux ,DOS
Application:
POS system
Automatic ticketing system
Financial Corporate Savings System
Audited Supplier 
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