Feature
Transfer rate of the two serial ports as high as 250 k/s
Compatible standard is 16c550 UART
Specification
Chipset: McsChip MCS9922
PCI-Express
Accord with PCI - Express 1.0 a norms
The rate of PCI-Express is 2.5 Gb/s full duplex channel   
Supports plug and play
Serial interface RS-232
Compatible with the standard 16 c550 UART and 256 bytes of sending receiving FIFO
High speed data transfer rate  as high as 250 k/s
Supports RS-232 hardware flow control
Length of data bits：5，6，7，8
Parity：None、even、odd、space、mark  
Stop bit：1，2
System requirements
At least has an available PCI - Express x1slot in PC
Supported OS
Driver supports  Windows2000/xp/server 2003/xp 64-bit/ Vista, Linux, Dos, MAC
Package includes
PCI-Express to 2-serial expansion card
User manual
Driver disc