The ERGO K860 is a split, ergonomic keyboard for improved posture and less strain. Other features: - Natural hand, wrist, fingers, and underarm positions - Padded wrist support. - Innovative palm lift feature - Microphone muting, voice-to-text, and other customisable F keys. - 2 wireless connection options: Logi Bolt USB receiver, Bluetooth Low Energy Wireless Technology - Logi Bolt is Security Mode 1, Security Level 4 and the Logi Bolt USB receiver is pre-paired out-of-box - Pair up to 6 Logi Bolt products with 1 Logi Bolt receiver Tested and certified by the AGR (Aktion Gesunder Rücken e.V) / Forum Gesunder Rücken / Bundesverband Deutscher Rückenschulen. System requirements Bluetooth connection: Windows 8, Windows 10 or later; macOS 10.13 or later USB receiver: Windows 7, Windows 8, Windows 10 or later; macOS 10.13 or later, available USB port