This is a mini keyboard with custom functions, which can be used in design, stock, office, game, music, media, industrial control, testing and other fields.Metal knob, onehand control music cutin, volume, pause, previous song, next song, zoom in and out, previous page, next pageWith mouse and delay function18 characters per key, support onekey passwordCommon 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 computerReinsert the connector.Question 2: After the custom software is downloaded, it cannot be opened.Solution: Check whether it is blocked by anti 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.Current and voltage: DC 5V1AInterface: typecAxle: Outeum Red SwitchNotice:Need to use windows system for custom settingsSupport hot swapMaterial: Plastic,Metalcolour: ABlackPackage Contents:1 x Programming Macro Keyboard1 x data cableOnly 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 + 13cm.