Plug and play functionality for Win8.1/10/11, no driver required. Supports simultaneous connection of multiple Bluetooth-compatible devices. Solves USB gap problem, meets needs of various occasions. Compatible with multiple Bluetooth-compatible versions, adaptable downward. Stable transmission and low latency for seamless connectivity. Item Name: Adapter Material: ABS Bluetooth-compatible Version: 5.3 Frequency Range: 2.4GHz (2402-2480MHz) Transmission Distance: 0 to 20M Rated Voltage: DC5V Interface Type: USB Operating System: for Win7, for Win8, for Win8.1, for Win10, for Win11 Features: Plug And Play, Multi-Device Support, Low-latency Size Details: L: 2.18cm/0.86", W: 1.57cm/0.62", H: 0.59cm/0.23" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Adapter