Specifications: Material: Aluminum Alloy Color: Silver/Gray Operating temperature: 40-45° Interface: > USB 3.1 Type-C connector > USB 3.1 Type-C Power Delivery charging port > USB C Date Transfer Port Only > USB 3.0 Type-A port > HDMI output port > TF card slot > SD card slot Note: It is 3 models (5 in 1  6 in 1 7 in 1 ). Please choose right one. If your laptop it is not macbook you can choose the adapter add extend cable modelthen will be working. Add extend cable can work with other brand laptop. You need put all type-c plug in macbookthen it can be working.