Specification: Item Type: Macro Mechanical Keyboard Material: Acrylic, PCB Usage: Suitable for office, games, music, media, industrial control, laboratory, production line testing and other fields System Support: For Windows, for VISTA, for Linux, for OS X Button Life: Up to 50 Million Times Type: Dustproof Green Shaft Quantity of Keys: 12 Keys Size: Approx. 132 x 77 x 38mm / 5.2 x 3 x 1.5in (L x W x H) Current and Voltage: DC 5V/1A Working Temperature: -10℃-50℃ Software Download: one Drive：s://1drv.ms/u/s!Aja2uUIxpjcwacFgtI6ovYnRpnE?e=q0xIz5om Package List: 1 x Keyboard 1 x USB Cable Note: This software can only be run on for Windows system temporarily, try to download it on the PC side of the computer, the setting software does not need to be installed, it can be run directly after opening it, and it will be automatically stored on the chain disk after setting, and then plug it into the USB protocol that supports the USB protocol. Use on for Linux, for OS X and other systems (the first time you run it, pay attention to the release of antivirus software and set it as a trusted file)!