The CyberPro PCI 2S high-speed serial I/O card provides two additional 9-pin serial ports Supports 32-/64-bit, 3.3V/5V PCI and PCI-X slots Will work as standard RS232 port or with 5V or 12V power output for devices that require power (such as handheld scanners, table scanners, POS displays, etc.). Configurable via jumpers with silk-screened settings on PCB WHQL certified: Designed to work with Microsoft Windows XP