Two USB2.0 interfaces are expanded through the mPCI-E card slot, suitable for connecting mini USB devices This product is a MINI PCI-E expansion card. It requires a free MINI PCI-E slot on the motherboard before it can be installed and used. It cannot be installed and used in a PCI slot. Do not insert it into a PCI slot The MINIPCI-E standard of contains USB2.0 signals and 3.3V power supply. This product leads the USB signal to the USBHUB chip and boosts 3.3V to 5V/1A to supply USB devices Because the USB signal is output from the computer, some computer screens may miss this signal or have no signal output at all, which may cause the card to be unusable. This is not a card problem. If the internal USB bridge is damaged and you cannot use this card, you can search for whitelist tutorials to unlock the USB port, so this product is suitable for users with computer skills Suitable for motherboards or laptops with MINI PCIE interfac Product interface: 5PIN1.0mm supporting 2 USB cables Product interface: MINI PCI-E Product rate: 480Mbps Product master: FE1.1S Support system: WinXP/2003/VISTA/2008/7/8/10/11 32/64BIT/Linux Colour:Blue+Black Material:PCB Package Contents: 1x Expansion card 2x Data Cable 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.