1、Free Matching: DIY 84 key mechanical keyboard kit, switch hot swappable shaft base, can be freely matched with any switches and keycaps, DIY your favorite keyboard. 2、Switch Hot Swap: switch hot swap shaft, unique design patent, combined with double layer thick metal panel, bring longer plug life. 3、Compatible: Compatible with For Windows XP, for Vista, for Win 7, for Win 8, for Win 10, for Win 11, for OS X, the keyboard is suitable for all environments, home and office use. 4、Aluminum Alloy and ABS: Aluminum alloy and ABS one piece shell, strong hardness, metal positioning plate, interlayer sound proof silicone, bottom noise absorbing cotton, thickened double layer metal panel, all top level configurations, is the best choice for your keyboard DIY. 5、Note: When installing the switch, check that the pins of the switch are not bent. During installation, the hot swap shaft needs to be inserted vertically. The keyboard keycap layout is 75% layout. When choosing a keycap, please choose a keycap that supports 75% layout! (The product does not have a shaft body, you need to prepare it yourself). Item Type: 84 Key Mechanical Keyboard DIY Kit Material: Aluminum Alloy, ABS Key Arrangement: 84 Keys Backlight Type: RGB Symphony Backlight Connection Method: Wired Connection Hot Swappable Shaft: Support Standard Height 5 Pin Shaft and 3 Pin Shaft System Requirements: For Windows XP, for Vista, for Win 7, for Win 8, for Win 10, for Win 11, for OS X 1 x Keyboard Kit 1 x Key Puller 1 x Data Cable 1 x User Manual