IO Crest SI-PEX15056 4 Port DB9 Serial RS-232 Card PCI-Express x1 with Fan-Out Cable Asix99100 Chipset

The IOCrest SI-PEX15056 lets  you add 4 external RS-232 serial ports to your desktop computer.  It comes with a Fan-out cable as well as a spare low-profile bracket for installing in standard or low profile systems.  To be used in applications such as serial attached devices, serial networking/monitoring equipment, data acquisition system, POS terminal and industrial PC, add-on I/O cards-serial/USB,  and embedded systems-for I/O expansion.  .