Features 1.4 Ports: This PCIe to USB expansion card provides 4 USB2.0 ports that allow you to connect keyboard, mouse, external hard drive, CD/DVD drive, webcam, USB printer, scanner, game controller, USB VR, digital camera, etc. 2.Widely Compatible: This PCI express expansion card is ideal for Win 7, for Win 2000, for Win XP, for Vista, for server 2003 to 2008 32/64 bit for Linux. 3.Easy Installation: This PCIe to USB 2.0 card can be easily installed in the desktop chassis. Turn off the computer, unplug the power, remove the computer case, push the card into the pcie socket and tighten the screws, then close the computer case cover. 4.4 Pin Power: This PCIe to USB 2.0 adapter card with MOSCHIP adopts 4Pin power supply, which ensures high stability. 5.Warm Tips: This PCIe to USB2.0 adapter is downward compatible with USB1.1 devices, suitable for PCI Express x1, x4, x8 or x16 sockets. Specification Item Type: PCIe to USB2.0 Expansion Card Material: Printed Circuit Board Port: 4 x USB 2.0 Power Supply: Large 4Pin Power Supply (Support Bus Power Supply, Small Power Equipment Can be Connected without Power) Chip: MOSCHIP Applicable Slot: PCIE Transmission Rate: Theoretical Transmission Rate Up to 480Mb/s Product Size: Approx. 120 x 86 x 68mm / 4.7 x 3.4 x 2.7in ( Manual Measurement, Slight Error May Exist ) Package List 1 x PCIe to USB2.0 Expansion Card 1 x Screw