MPEX4S552, Startech 4 Port Mini PCI Serial Board, Плата

Four high speed RS232 serial ports with data transfer rates up to 921.6 Kbps
High Performance 16650 UART
Includes 4x 30cm IDC to DB9 serial cables
256-byte deep FIFO per transmitter and receiver
Native single-chip, single lane PCI Express
In-band software flow control, using programmable Xon/Xoff in both directions
Automated out-of-band hardware flow control using RTS/CTS
The smallest form factor available, for internally adding serial ports to any embedded system
Native single-chip design means up to 48% less load on your CPU which is critical for small embedded PCs that use low power, low MHz CPUs
Applications
Add serial ports to industrial embedded computers and systems
Add RS232 serial control to an embedded or slim media center/media server/all-in-one PC
Add RS232 serial ports to slimline POS systems

Datasheet MPEX4S552