Simplecom NB540 USB Bluetooth 5.4 Adapter Wireless Dongle NB540 is a Bluetooth USB adapter equipped with advanced Bluetooth 5.4 technology, specifically designed for Windows systems. It offers improved performance, faster data transfer rates, and lower energy consumption. With this Bluetooth dongle, you can easily connect multiple devices to your PC and enjoy wireless connection with a wide range of Bluetooth-enabled devices. It also supports Bluetooth Low Energy (BLE) to help minimize power usage, while maintaining full backward compatibility with earlier Bluetooth versions. This adapter allows you to connect your PC to various Bluetooth devices such as keyboards, mice, headsets, speakers, printers, controllers, phones, and more. It's a perfect solution for wirelessly transferring files, audio, or voice on your desktop or laptop PC. Features Designed to provide Bluetooth connectivity for PCs or laptops Supports Bluetooth 5.4, backwards compatible with previous versions Offers faster device discovery and reduced energy consumption Supports LMP Version 13 (Link Manager Protocol) Supports Bluetooth Low Energy (BLE) to help minimize power usage Class II power standard with a signal range of up to 20 meters Supports A2DP stereo playback Supports EDR data rate up to 3Mbps Supports plug and play for Windows 10 and later operating systems Specifications Bluetooth Protocol: Bluetooth V5.4 Interface: USB 2.0 Input Power: USB 5V (USB Powered) Operating Frequency: 2.402-2.480 GHz Transmission Range: up to 20M (Class II) Sensitivity: -86dBm@0.1%BER Profiles: SPP, BLE, ANCS, HFP, HCRP, A2DP, AVRCP Operating Temperature: 0°C - 40°C Operating humidity: 10%-90% RH (Without condensation) Dimension: 22(L) x 14mm(W) x 6mm(H) Supported OS: Windows 7, 8, 10, 11 (32/64bit) Important Note: To avoid software confliction, please uninstall any previous Bluetooth driver software installed on your computer prior to installing this new Bluetooth 5.4 adapter. This adapter is plug and play for Windows 10 and later operating systems, and it will be installed automatically when plugged into computer (internet connection is required). Windows 7 and 8 systems require driver installation from CD or download driver.