Specifications: Brand: UnnlinkName: USB Bluetooth adapterModel: 1652Color: BlackOuter: ABSBluetooth version: 5.1Transmiion distance: 20mNo drive: No drive (WIN7 and some systems need to be manually installed)Support system: Windows 7/8.1/10/11Other features: Supports simultaneous connection of 7 Bluetooth device Feature: 1. Support multiple devices to connect at the same time: support multiple Bluetooth-compatible devices to connect at the same time, solve the USB gap problem, and meet various occasions2. Drive free for Win8 and above, plug and play: Win8.1/10/1 drive free, plug in to support Win7 (drive required)3. Compatible with multiple Bluetooth-compatible versions: downward adaptation of 4.1/4.2/5.1 Bluetooth-compatible versions4. Universal: Wirele devices such as a keyboard,mouse,speaker,printers,gamepad&more5. Small and lightweight: Bluetooth-compatible 5.1 adapter is small, lightweight, won't take much space, easy to carry or store. Bluetooth 5.1 Adapter High performance stable transmiion Enjoy Wirele Life Connect various electronic devices with Bluetooth to enjoy wirele life Computer Connect Wirele Keyboard/Mouse Computer Connect Wirele Bluetooth Speaker Computer Connect Wirele Bluetooth Headset Computer Connect Phone/Tablet PS: The iPhone does not support Bluetooth data transmiion, only Bluetooth audio transmiion Powerful Signal The transmiion distance of 20 meters can be achieved without interference Fast Response, Refuse to delay Equipped with the new Bluetooth 5.1 chip,more stable transmiion Gold-plated Plug Wear-resistant anti-oxidation material, higher quality Automatic Pairing Boot quickly automatic connection Clear Working Statu With blue indicator light Connection Diagram