Item Name: 4-key Mini keyboard arrow keys up, down, left, right WASD USB Mechanical Keypad. Product Description4-key Mini Keyboard Arrow Keys Up, Down, Left, Right WASD USB Mechanical KeypadFeatures:lHID standard keyboard, plug and play without driverlThis keyboard supports multiple function modeslEach button can be set to a different function mode without affecting each otherlThe button function can be set by yourself, there is a dedicated setting program, and the setting can be repeatedlOnboard storage, settings are saved in the keyboard, no need to set again to replace the devicelSupport Windows, Linux, MacOS, Android, Raspberry Pi, etc.lCustomkeyboardkeys,shortcutkeys,multi-stepoperation,multi-keyinone,copy/paste/cut/undo/redo/selectall/play/pause/volume/cutsong/forward/backwardSpecifications:lDefault mode: keyboard modelMouse mode: move the cursor/click the mouse buttonlMultimedia control: control media playback, etc.lTwo-step operation: press and lift to perform different operationslLED control: you can control the keyboard LED to a specified statelGame controller: buttons that can be set as game handles, etc.lOne key password: One key to enter the preset passwordPackage Include:l1 x 4-key Mini Keyboard