BTXETUEL Mini Keypad WASD Arrow Keys Keycap Keyboard One Hand Mechanical Gaming Keypad Programmable Customized Keyboard for Work and Gaming 4-Key

【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction.

【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary.

【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product.

【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer. 【Portable Mini Keyboard】Ultra small size, comes with a detachable USB-C cable, effectively saves desktop space. You can connect a mini keyboard (plug and play) and a regular size keyboard on the same computer at the same time and they will not interfere with each other. [Default Function] The default functions of the four keys are up, left, down, right. Plug and play, no software required. Make your workflow very fast. [Other functions] Other functions are also available, such as shortcut keys, multi-step operation, multi-key-in-one, undo, redo, play, pause, volume, switch songs, forward, backward. Control your favorite case light color and gradient mode from the software or website. [Programming with software] This software is only for Windows systems. Windows Firewall may issue a warning at startup. The software is very secure. Software: https://dl.sayobot.cn/setting.zip [Programming by website] This website can also be applied to MacOS, Linux, and Windows systems. We recommend using Chrome and Edge browsers to access the website. Website: SayoDevice.com [Device] Programming is stored on the device. You don't need to set it up again when you replace your computer. If you have any problems with your keypad, please contact us. 【Portable Mini Keyboard】＜ br ＞ Ultra-small size, comes with a detachable USB-C cable, effectively saving desktop space. You can connect a mini keyboard (plug and play) and a regular size keyboard to the same computer at the same time. do not interfere with each other. ＜ br ＞ [Default functions] ＜ br ＞ The default functions of the four keys are up, left, down, and right. Plug and play, no software required. Make your workflow very fast. ＜ br ＞ [Other functions] ＜ br ＞ Use other functions Shortcut keys, multi-step operation, multi-key-in-one, undo, redo, play, pause, volume, song switching, forward, backward, etc. Control your desired case light color and gradient mode from the software or website. ＜ br ＞ [Programming by software] ＜ br＞ This software is exclusively for Windows systems. Windows Firewall may issue a warning at startup. The software is very secure. Software: https://dl.sayobot.cn/set ting.zip＜ br ＞ [Programming via website] ＜ br ＞ This website is also applicable to MacOS, Linux, and Windows systems. We recommend using Chrome and Edge browsers to access the website. Website: SayoDevice.com＜ br＞[Device]＜ br＞Programming is saved on your device. You don't need to set it up again when you replace your computer. If you have any problems with your keypad, please contact us.