Lenovo Preferred Pro USB Keyboard Features:Quiet 104-key full-size layout (includes three Windows keys) Detachable rubberized palm/wrist rest for additional comfort Three levels of keyboard tilt Common Windows shortcuts are highlighted on key skirts helps improve productivity USB-attach Keyboard USB cable length: 2.0 m (6.56 feet) Specifications:Approximate weight: 1.41 kg (3.1 lb) Approximate height: 34 mm (1.3 in) Approximate depth: 185 mm (7.3 in) Approximate width: 453 mm (17.8 in) Approximate USB cable length: 2.00 m (6.56 ft) Approximate weight: 1.63 kg (3.6 lb) Approximate height: 63 mm (2.5 in) Approximate depth: 233 mm (9.2 in) Approximate width: 495 mm (19.5 in) Packaging Lenovo Preferred Pro USB Keyboard Palm/wrist rest User's Guide