Input: 1 USB-C 3.1 & 1 USB-A.
Output: 2 USB-C & 3 USB-A.
FAQ:
Q: I received the Model Y USB Hub but it is impossible to install. It is way too tight and without seeing if the outlets are lined up additional pressure will damage the device or the car.
A: Please do not try to line up the bottom but you should kind of line up from the top then it become easier
Two different USB specifications thus harder to install, so please do be careful or we will feel very sorry for your Tesla if you break something!