4X( PCI-E to USB3.0 Adapter Card PCIe to USB 3.0 Adapter, Suitable for4594
(Extend the standard USB interface through the mini PCIe port to connect USB3.0 devices. 1 x mini PCI-e to USB3.0 adapter card). The extended USB port can be connected to USB flash drives, USB Bluetooth adapters, WIFI adapters, etc.