Adesso MKB-125B Keyboard features mechanical switches which provide instant sound feedback due to the clicking heard with each keystroke. It is this tactile and audible response in typing that improves accuracy, productivity and efficiency. It features an n-key rollover function permitting up to 10 keys to be pressed at the same time. Fast typists and gamers will be delighted to use this mechanical key switch keyboard. Manufacturer: Adesso, Inc Manufacturer Part Number: MKB-125B Manufacturer Website Address: http://www.adesso.com Brand Name: Adesso Product Model: MKB-125B Product Name: MKB-125B Keyboard Product Type: Keyboard Keyboard/Keypad: Keyswitch Technology: Mechanical Keyboard/Keypad: Keyboard/Keypad Connectivity Technology: Cable Interfaces/Ports: Keyboard/Keypad Host Interface: PS/2 Green Compliant: Yes Green Compliance Certificate/Authority: RoHS