Product description: ?Extend with 2 Port USB 3.0 USB C, 5 Ports USB A downstream compatible with USB 2.0 and 1.1 devices ports for standard desktop PC ?Support UASP:70% Faster than traditional USB 3.0 with UASP. The UASP Transfer Protocol only can accelerate read and write speed of SSD hard disk ?Compliant with USB 3.0 specification. ?Compatible with USB 2.0 & 1.1 specification. ?Date transfer rates up to 5.0Gbps - 10x faster than USB2.0 ?Plug & play and hot swapping capability. ?Bus-powered mode and no external power required for most of peripherals.Operating Systems ?Windows XP, Vista and Windows 7(with included drivers) ?Windows 8/10 and Mac 10.8.2 above -No additional drivers are needed for Win8/10, it has built-in support for the FL1100 chipsetNote: ? Not compatible with old PCI. ? Not equipped with Low-profile bracket.The PCI-E Card dimensions are 4.72 (in)length and 3.14 (in) height?It doesn't apply to small computers and server chassis, such as 1U and 2U.After reviewing the product details, check the port size of the computer case to avoid incorrect slot installation and the PCI-E expansion card too short size. ? USB C interface contains only data signal, not video signal. ? To ensure the PCI Express Card works properly, please first connect the PCI Express Card to your PC's power supply. ? Aggregate transfer speed up to 500 MB/s (500 MB/s in total for the whole). For Oculus Rift users, it is recommended to purchase two PCI-E cards for multiple sensors. ? This PCI-E card is not recommended to Kinect 2 users.Package ?1x USB3.0 PCI-E expansion card ?1x CD Driver ?1x Mounting Screw ?1x User's Manual