Item Type: PCI E 1 to 2 Riser Card Material: Metal, Plastic Interface: 2 x USB3.0 A Female (PCI E signal, cannot insert USB device) Input Interface: PCI E 1X Interface Speed: PCI E 2.0 Support Slot: PCI E 1X, 4X, 8X, 16X Product Master: For ASMeida ASM1182E Support System: For WIN XP, for WIN 7, for WIN 8, for WIN10, for WIN11, for LINUX 1、Expand To 2 Interfaces: PCI E 1X to 2 PCI E multiplier card can realize 1 interface can be expanded to 2 PCI E interfaces, effectively solving the problem of lack of PCI E interface on the motherboard  2、Direct Power Supply: The main control board uses the PCI E interface to directly supply power, no external power cord is required, and the two PCI E interfaces are gold plated, the main control board is not subject to external interference  3、Stable Transmission: The PCI E riser card adopts for ASMedia ASM1182E master controller, which ensures high speed and stable transmission  4、Wide Compatibility: The PCI E expansion card is compatible with PCI E 4X, 8X, 16X. The system supports for DOS, for Linux, for Win7, for Win8, for Win10, for Win11 and other systems  5、Easy Installation: Before installation, the motherboard needs to be powered off, and then straighten the slot to effectively reduce interface interference, ensure data reliability, and improve work efficiency