Drive free for systems Win8, Win8.1, Win10, Win11, Win7 needs to install the driver, need to install the driver please contact us USB Bluetooth-compatible 5.1 Adapter Handsfree Dongle Wirele Transmitter Receiver 2.4GHz for Desktop Computer Laptop PCFeature: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.Specification:Certification: CEOrigin: Mainland ChinaModel Number: Bluetooth-compatible AdapterProduct size: 21.8*15.7*5.9mm/0.85*0.6*0.23inBluetooth-compatible version: 5.1Frequency range: 2.4GHz (2402-2480MHz)Transmiion distance: 0~20MRated voltage: DC5VInterface type: USBOperating system: Win7, Win8, Win8.1, Win10, Win11 (drive free for systems above Win8)Package weight: 14g Note:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2cm measuring deviation due to manual measurement. Packages:1 x Bluetooth-compatible Adapter 1.All items will be double checked and well packed before sending. Items will be dispatched within 3-7 busine days after customers pay the order. Because we have thousands of order everydays. We need to arrange shipment one order by one order. We will send the products to you ASAP. 2.We only ship to Confirmed order addre.Your order addre MUST MATCH your shipping addre. 3.It usually takes about 20-60 busine days for delivering the parcel to the destination(for remote areas,it may take a littlelong).Meanwhile,you can choose DHL Expre to shorten the shipping time if you need the order urgently. 4.If you do not receive the order within 60 busine days,please feel free to contact us before leaving negative Feedback,we will do our best to help you to resolve the iue. 1.If you are not satisfied with the item when you receive it,please return it return it within 10 days for a replacement or money back.Please contact us before you return it. 2.All returned items must be in the original packaging and you must provide us with the shipping tracking number and specific reason for the return. 3.We will refund you full money,upone receipt of the item in its original condition and packaging with all components and acceories include. 4.If the item is damaged during transport or cannot be used normally,please contact us the real photos of the items and we will refund you money. We maintain high standards of excellence and strive for 100% customer satisfaction!Your satisfaction is our first priority! If you receive the order and it is in good condition,we would be grateful if you would leave 5-Stars Positive Feedback for the transaction. Otherwise,we would be grateful if you would contact us before leaving 1-Star to 3-Stars Feedback,we will take pleasure to provide a satisfactory solution.