Mechanical Feeling Gaming Keyboard,MALLCROWN USB Wired LED Keyboard Backlit keyboard 3 Color Adjustment 1. Colorful LED Illuminated Backlit USB Wired Gaming Keyboard Colorful LED design is perfectly for any working place especially at night time. 2. Exclusive cooling gaming keyboard to offer the most comfortable gaming environment. Spring type ergonomic design, care for your wrist, long-term use is not easy fatigue. 3. Best choice for seeking trendsetting users. It has some highlight keys and multimedia keys which can be easily used for the serious user. 4. With backlight power switch, you can open or close the backlight, keyboard adopts High bouncing silicone design, support up to 10 million hits. 5. Support Systems: Windows 78XPVistaMac OS(10.2.8) or higher.