1PCIE to 8 Port: The PCIE X1 to 8 port RS232 serial end interface card adds eight RS232 serial ports to any PC using PCI Express expansion slots for automatic system manufacturing and system integration 2Interface Design: PCI Express X1 interface (also applicable to PCIE X1, X4, X8, X16 slots) 3High Speed Transmission: Designed for POS, ATM and other applications. Multiple serial port devices such as PCS, terminals, modems, printers, and scanners can be connected. The data rate of each serial port is 921.6 Kbps, each port data transmission rate can get 921.6KBPS 4Prolong the Service Life: Aluminum alloy heat sink with strong thermal conductivity can protect the chip from burning out for a long time and prolong the service life of the adapter card. In addition, also equipped with 8 cm small case baffle, can ensure the use of large PC case, also can be used for small PC case 5Function: Provide mediation control signals to ensure the compatibility of serial device peripherals, Multi serial card can be installed in common PC or server, each serial port send, receive 256 byte depth FIFO, support RS232, RS485 and RS422 mode, full serial modem control, support hardware, software flowing control, in all serial ports IEEE1284 support slow IrDA Item Type: Expansion CardMaterial: PCBChipset: MCS9900Port: 8 x Serial PortInterface: PCI Express 1x SlotApplicable To: PCI E x1, x4, x8, x16 SlotsSupported Operating Systems: For Windows 10 / 8 / 8.1/7/vista/xp/2000, for Windows Server 2012 / 2008 / 2003, for OS X 10.x (Intel Based, Up to 10.9), for Linux 2.4.x and Later (testing Up to 3.5) 1 xExpansion Card1 x8 Port Serial Cable1 x 8cmSmall Case Baffle