Holiday Shipping Details & Extended Holiday Returns 
This MAIWO KC005A PCIE adapter will allow users add 4X USB 3.0 ports on desktop computers though PCIE (1X) slot. The added on superspeed USB 3.0 ports will provide 5Gbps max data(total) transfer speed for video, audio, photos, or files.
Users do not need to plug any additional power cable on board (only PCIE slot) and get each port 2A (8A in total) max power supply for high power-consuming USB device such as hard drive discs. Enjoy super easy installation with Plug & Play.
Add 4X Ports USB 3.0 on desktop computer by PCI Express slot-Each port 5Gbps max data transfer speed for fast connection.
Internal USB card from mother board though a PCI Express slot can ensure stable connection,lost few data transfer speed. Do not have lost connection issue like external USB HUB does.
PCI Express 2.0 standard design will be compatible with PCIE 3.0/4.0/2.0/1.1 standard. PCIE X1 interface design will be compatible with PCIE X1,X2,X4,X8,X16 slot.
This USB 3.0 PCIe expansion card supports main operating system: Windows/7/8/10, Linux and Mac OS, plug and play.(Need to Install Driver on Windows XP,Vista)
Please kindly note:
1. Please install driver for this USB card on PCs.
2. Make sure PCs mother board have empty PCIE slot for PCIE USB cards.
3.Make sure USB device is USB 3.0 or can't get USB 3.0 speed.
4. Please use screw driver change bracket if using slim PCs.
5. Please make sure PCs bracket gape can pass though USB interface.