1,DC (5-12V) auxiliary power and DC fan cooler design for module stable work 2,Supports the following M.2 5G Modules:for Quectel: RM500Q, RM500U;for Gosuncn: GM800;for : SIM8200 3,Supports system bus interface: USB 3.0 4,Supports USB 3.0 interface of M.2 Cards (Socket 2 SSIC-base WWAN) such as 2G GSM, GPRS, 3G,CDMA, WLAN,WWLAN, HSPA MODEM , GPS, 4G WiMAX, LTE, 5G Mini Card to desktop PC. 5,Supports SIM/MicroSIM/NANO SIM card Supports 3042/3052 type M.2 key B Card dimension. Product name: M.2 to USB 3.0 adapter Interface: 2* SIM card slot, 1*type-c interface, 1*USB interface, 1*DC5V Power interface,1*NGFF M.2 B-Key slot Product size: 162x147mm Colour:black Material:PCB+Metal Package Contents: 4 x M.2 to USB 3.0 adapter 8 x M2 Screw 16 x M2.5 screw 4 x screwdriver 16 x 2.4G/5G antenna 4 x USB 3.0 cable 4 x SIM Card Extension Kit 4 x Type C cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.