1. The latest M.2 NGFF card slot expands with two USB2.0 ports, which is very suitable for connecting mini USB 2 devices. This product is a desktop PCI-E expansion card, which requires a Free M.2 slot on the motherboard to be installed and used. (Note that the M2 of CNIV interface cannot be transferred without USB signal) 3. Hardware requirements: a motherboard or laptop that supports M.2 KEY AE network card interface; This product is an M.2 KEY AE expansion card, which requires a free M.2 KEY AE slot on the motherboard to install and use another KEY -Can not be installed and used on the M slot, do not insert it into the KEY-M 4 slot. Scope of application: suitable for motherboards or laptops with M.2 KEY AE interface Product name: M.2 NGFF KEY AE to dual USB2.0 expansion card port Product model: NGFFP2U-G01 Main control: GL850 Support interface: KEY AE M.2 NGFF Number of branch connectors: one for two Data transmission speed: 30 (MB/s) Support system: WinXP/Vista / Win7 / Win8 32-bit / 64-bit MAC 10.8 and above color: black + blue Material: PCB + metal size: cable length: 30cm Package Contents: 1 x USB2.0 expansion card 2 x data cable Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The allowable measurement error is +/- 1-3 cm.