Sunix USB2302 - Standard + Low-profile DUAL bracket , pci-Express (1x) - 2 x external usb3.0 ( 5.0Gbps ) , usb2.0 backward compatiable , NEC UPD720200 - no 4pin molex power required , supports power management and remote wakeup from USB device , with USBIF certification - includes extra low-profile onl1 for 2U rackmount or slim desktop ( antec minuet , nsk1480 )