1. Need to use windows system for custom settings 2. Support hot swap 3. Four sets of definitions can be set and switched freely 4. Axis switch color: blue 5. This is a mini keyboard with custom functions, used in design, stock, office, game, music, media, industrial control, testing and other fields. 6. Support one-key copy and paste 7. Wired TyPe-C interface, no driver required, plug and play 8. Metal knob, one-handed control of music cutting, volume, pause, previous song, next song, zoom in and out, previous page and next page. Common troubleshooting: Problem 1: There is no response when the keyboard is connected to the computer, or the device prompts abnormally. Solution: Check whether cable and interface are connected properly, and then plug and unplug again; replace the USB on the computer Reinsert the connector. Question 2: After the custom software is downloaded, it cannot be opened. Solution: Check whether it is blocked by software and set it as a trusted file. Question 3: Why is the button or knob always "a" after connecting to the computer? Solution: Output a is the normal factory setting, open the custom software to redefine the button function. Colour:black Material:ABS+Acrylic+Metal Size:8.7 x 5.7 x 4cm Package Contents: 1 x keyboard 1 x usb data cable 1 x USB adapter 1 x Instructions in Chinese and English 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.