Chip: ASIX MCS9990 Card slot: PCI Express x1 Interface: 2 x PS/2 (round terminal) Built-in power supply and USB expansion Support equipment hot swap, no driver, plug and play size:8 x 6 x 1cm Material:pcb colour:black Package Contents: 1 * PCIE PS/2 riser card MCS9990 Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. PCI Express bus is suitable for PCI Express x1, x4, x 8, x16 card slots on the motherboard, PCI card slots are not supported SE-U2M9990A-P2 PCIe to dual-port PS2 riser card can add 2 PS/2 ports on the desktop motherboard or server host. Built-in 1 9-PIN USB2.0 pin port, which can be connected to floppy drive, optical drive or USB expansion panel Built-in 4-PIN power socket to sufficient power supply and stable operation of the equipment. (Low power consumption, environmental protection and energy saving) The PS/2 port provides two external PS/2 terminal interfaces, supports hot plugging, and provides users with high-speed, stable and safe data transmission. Supports hot-swappable, plug-and-play and driver-free peripherals SE-U2M9990A-P2 adopts ASIX MCS9990 chip solution, stable transmission, compatible with line force, used for all other external PS/2 interface devices such as mouse and keyboard.