How to Use: Wired USB: Plug and Play Bluetooth mode: In Bluetooth mode, press and hold the "connect" button for three seconds to enter the pairing state (the red light flashes slowly). You can use the Bluetooth function such as a computer or mobile phone to search for a device named "MK321 Pro", click the name to connect, after the connection is successful The red light of the device will stay on for 2 seconds and then turn off. 2.4G mode: In 2.4G mode, press and hold the "connect" button for three seconds to enter the pairing state (the green light flashes slowly), then insert the receiver into the computer, and the device and the receiver will be paired automatically. After the pairing is successful, the green light of the device will be constant. On for 2 seconds and then off. Specification: Item Type: 3 Keys Keyboard Material: ABS Lighting Effect: Color Backlight Connection: Wired USB, Wireless 2.4g, Wireless Bluetooth Battery Type: Built in 140mAh Lithium Ion Battery Applicable Equipment: Computer Universal Package List: 1 x Keyboard 1 x Receiver 1 x Data Cable

3 Connection Methods: Compact in appearance, easy to carry, support wired USB, wireless 2.4g, wireless Bluetooth three modes of connection, get rid of the shackles of cables. Applicability: After the software is set based on the key definition under for Windows, it can be used in for Dos, for Windows All, for Linux, for OS, for Android and other systems. With Custom Driver: The key function can be set by yourself, and the operation is more convenient. Comfortable Button: The shape of the button is designed in line with ergonomic principles, and the curved surface of the button is more suitable for the human finger pulp, making the triggering easy and comfortable. Fine Workmanship: Perfect style, RGB backlight, more gaming experience, full of technology.