Chipset: Moschip MCS9922 or MCS9904
Interface: PCI Express
4 X DB9 Serial Port
Compliant with PCI-Express Revision 1.0
Compatible with industrial standard 16C550 UART
On Chip 256-byte Depth FIFO in Transmit
Data transfer rate up to 250Kbps
Support 5, 6, 7, 8, 9 bit serial format
Support hardware and software flow control
System Support: Windows 7/Vista/XP/2000