Feature typical specification (bluetooth 5.1 usb adapter)
bluetooth version 5.1 with le + edr (backward compatible)
frequency range 2.402–2.48 ghz
data rate up to ~3 mbps (edr)
range typically 10–30 meters
interface usb-a (usb 2.0 standard)
profiles supported hid (keyboard/mouse), audio (a2dp/avrcp), spp, pan, more
chipsets common: csr, realtek rtl8761/8761buv, others
dimensions & weight nano stick: ~19-30 mm × 7-17 mm; weight: ~3–10 g
os support windows 7–11, some support for linux; plug‐and‐play for win8+