I've been using this for about a year with my ROG ALLY. I used it with HDMI output to a display and connected a gamepad via USB. You can add an M.2 SSD internally (see photo 5). The power input is USB Type-C (see photo 3), but a power adapter is not included, so you will need to provide your own. One that can output 60W or more is recommended. I am currently selling a high-output charger separately, and I can offer a small discount if you purchase it together. - Connection Ports: HDMI, USB 3.0 x2, USB 2.0