TP-Link UB500 Bluetooth 5.4 Nano USB Adapter.

Bluetooth 5.4 Technology Delivers faster transmission speeds, enhanced range, and improved energy efficiency with superior encryption and reliability. Nano-Sized Design Ultra-compact form factor (14.8 × 6.8 × 18.9 mm) allows the adapter to remain plugged in without obstruction. Wide Device Compatibility Seamlessly connects PCs with Bluetooth-enabled headsets, controllers, speakers, keyboards, mice, and mobile devices. Multi-Device Connectivity Supports up to 7 simultaneous Bluetooth connections, ensuring stable and flexible usage. Extended Range & Signal Stability Improved link distance and interference resistance allow high-quality audio streaming across rooms.