Add 2 RS-232 DB9 serial ports to your full height or low profile computer through a PCI Express x1 slot with IOCrest SI-PEX15037 PCI-Express x2 serial controller card. The RS232 Serial Adapter Card is compatible with a broad range of operating systems, including Windows and Linux (Kernel 2.6.11 and up). Plus, the adapter card includes an optional half-height/low profile bracket that allows the card to be installed in virtually any computer case.
