1. Reversible USB-C/Type-C connector design (plugs in both ways) allows you to conveniently connect cable in any orientation. 2. Supports up to 7 USB 3.0 devices: 1 USB C + 4 USB A 5 port hub and 1 internal 20pin connector for expanding another two USB 3.0 port. 3. 4 external USB 3.0 Type-C female connectors. 4. Supports simultaneous operation of multiple USB 3.0/2.0/1.1 devices. 5. One motherboard 20P male connector available for 2 more USB 3.0 port. 6. power connector available for some high current consumption peripherals or 3 above devices at the same time. Specification: Interface: USB3.1 TYPE-C + 4 Port USB3.0 TYPE-A + 19PIN Header Support System: Compatible with for XP, for Vista, for 7, for Linux, for 8/8.1/10 Colour:black Material:PCB+Metal Due to different product batches, the appearance , which does not affect the use Package Contents: 1 * PCI-E to USB3.0 Expansion Card 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.