Function: 1. Provide convenience: This is a 12-key programmable keyboard with adjustment knob, you can set hotkeys to reduce the cumbersome process. 2. Multifunctional: Mini keyboard with multiple functions, you can set all the key functions on your Windows keyboard and realize complex and complex hotkeys with a single key. 3. Memory function: The keyboard has a storage function that can be used on systems that support the USB protocol, such as Linux, OS X, etc. After configuring it in Windows. 4. Adjustable knob: The knob can also be set using functions such as playing the previous song, the next song, increasing the volume, decreasing the volume, pause, playback and other functions. 5. Portable and easy to use: Type-C interface to USB, no drivers, plug and play, no conflicts between computer and multiple keyboards, convenient and easy to carry. 6. Wide Application: Programmable keyboard is suitable for office, gaming, music, media, industrial control, laboratory, production line testing and other fields Specification: Item Type: Macromechanical Keyboard Material: Acrylic, PCB Application: suitable for office, gaming, music, media, industrial control, laboratory, production line testing and other fields System Support: Windows, VISTA, Linux, OS X Button life: up to 50 million times Type: Dustproof Green Glass Number of keys: 12 keys Size: approx. 132 x 77 x 38 mm / 5,2 x 3 x 1,5 inches (L) x width x H ) Current and Voltage: DC 5V/1A Operating temperature: -10 ℃ -50 ℃ How to use: 1. Small keyboard, open custom software on your computer. 2. 3. Click the function key corresponding to the keyboard simulation in the custom software, click download, proposing a successful download, you can use the custom keyboard. For example, if you want to set small key 1 as a copy hotkey (Ctrl+C), click “Key Settings Area” in the software, click “KEY1”, and then click Ctrl and C on the software simulation keyboards, click Download, and you will see a “successful download” message. Common methods of troubleshooting: Issue 1: When the keyboard is connected to the computer, there is no response or a message is displayed indicating that the device is malfunctioning. Solution: Verify that the cable and interface are properly connected, then remove them and insert them again. Replace the USB port on your computer and reconnect it. Error 2: Custom software cannot be opened after downloading. Solution: Verify that the antivirus software intercepts the operation and set it as a trusted file. Question 3: Why does the “a” always appear when you connect the computer after pressing the key or knob? Solution: Output a is the normal factory setting. Open custom software and redefine the key function. List of packages: 1 x Keyboard 1 USB cable