Bluetooth 5.0 – Applies the latest Bluetooth 5.0 technology, backward compatible with Bluetooth V4.0/3.0/2.1/2.0/1.1 Wireless Connectivity – Provides stable and convenient communication between Bluetooth devices and your PC or laptop Nano-Sized – Ultra-small for convenient portability with reliable high performance Supported Operating System – Windows 11/10/8.1/7HARDWARE FEATURESStandards and Protocols Bluetooth 5.0Interface USB 2.0Dimensions 0.58 × 0.27 × 0.74 in (14.8 × 6.8 × 18.9 mm)OTHERSPackage Contents Bluetooth 5.0 Nano USB Adapter UB500Quick Installation GuideSystem Requirements Supported operating systems include Win 11/10/8.1/7Environment Operating Temperature: 0℃~40℃ (32℉ ~104℉)Operating Humidity: 10%~90% non-condensingStorage Humidity: 5%~90% non-condensing