Mini HUB based on SL2.1A

The cheaper SL2.1A is used as the main control. Of course, this price also makes it impossible for this design to support the USB3.0 protocol. Those who have a greater demand for speed can just leave it. The main purpose is a keyboard and mouse receiver. I am a player who uses wireless keyboard and mouse all year round, and the computer is a notebook. There are few native USB ports, only 1 TYPEC + 1 USB 3.0 + 2 USB 2.0. I bought it. I always feel that something is missing from all the finished HUBs, large and small, so maybe the directly made one is the most suitable for me. I accidentally discovered the SL2.1A chip, which is really the best choice. It only costs a few dollars and has its own peripherals. The device is also uncomplicated (or almost none). The actual product has been verified and can be used for board making with confidence. The attachment provides the board making file and visual BOM. It is recommended to look at the schematic diagram. (You can directly print the board. The Lichuang silk screen custom logo has been added under the chip. You can directly select the customized custom logo position)