Specifications: _x005f_x000D_ Type: 2 External USB3.0 Port + Interal 19Pin Header Expansion Card _x005f_x000D_ Chipset: for VIA-VL805 Q6 _x005f_x000D_ Bus Modes: PCI-E x1 _x005f_x000D_ Compatible Slot: PCI-E x1/x4/x8/x16 _x005f_x000D_ USB Interface: 2 External USB3.0 Port + 19Pin Header(2 Internal USB3.0 Port) _x005f_x000D_ Transfer Rate: USB3.0 5Gb/s _x005f_x000D_ Power Interface: Big 4Pin Power Interface for USB3.0, Need connect the power, can normal use! _x005f_x000D_   _x005f_x000D_ Support OS: _x005f_x000D_ Windows XP 32/64 _x005f_x000D_ Windows 7 32/64 _x005f_x000D_ Windows8 (Support plug-and-play) _x005f_x000D_ Windows8.1 (Support plug-and-play) _x005f_x000D_ Windows10 (Support plug-and-play) _x005f_x000D_ Product size: approx. 66*120*20mm/2.59*4.72*0.78'' _x005f_x000D_ Package size: approx. 145*125*25mm/5.7*4.92*0.98'' _x005f_x000D_ Net weight: approx. 40g _x005f_x000D_ Gross weight: approx. 79g _x005f_x000D_ _x005f_x000D_ Note: _x005f_x000D_ Please allow 1-3mm differs due to manual measurement. _x005f_x000D_ Due to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding. _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Included: _x005f_x000D_ 1 x USB3.0 PCI-E Expansion Card