SIIGs DP 4-Port Industrial RS-232 Universal PCI Adapter Card with 3KV Isolation is a high performance serial adapter card designed to easily add 4 RS-232 serial ports with 15KV ESD protection to your PCI enabled desktop computer. Its serial interface delivers data transfer rates up to 921.6Kb/s and features 15KVDC ESD protection to protect both connected devices and the board itself from Electro Static Discharge. This dual profile universal PCI adapter card connects to your serial devices with space saving DB44 to 4-port DB9 cable and comes with a spare low profile bracket to install in standard height or low-profile systems to offer the utmost flexibility in system chassis installation.