I Express Card turns a PCI Express slot into two RS232 (DB9) serial ports
Features
Two RS232 serial ports with data transfer rate up to 250 Kbps
Selectable voltage output of 5V or 12V
Power output via pin 9
Complaint with PCI Express base specification revision 2.0
256-byte depth FIFO per transmitter and receiver
Works as standard RS232 port or with 5V or 12V power output for devices
Supports Auto-hardware flow control and Auto-software flow control to reduce CPU loading
Native single-chip, single lane PCI Express Hardware
Bus Type : PCI Express
Card Type : Standard Profile
Chipset ID : ASIX – AX99100
Industry Standards : PCI Express Base Specification Rev. 2.0
Interface : Serial
Port Style : Integrated on Card
Ports : 2
Performance
FIFO : 256 Bytes
Data Bits :5,6,7,8,9
Stop Bits :1, 1.5, 2
Parity :Even, Odd, None, Space, Mark
Max Baud Rate :250 Kbps
Maximum Data Transfer Rate : RS-232-250Kbps
Serial Protocol : RS-232
Connector(s)
Connector Type(s) : 1 – PCI Express x1 Male
External Ports : 2 – DB-9 (9 pin, D-Sub) Male
Software
OS Compatibility :
Windows 7, 8.x, 10
Windows Server 2008 R2, 2012, 2016
Linux 2.6.31 to 4.11.x LTS Versions only