I just bought this on December 31, 2025, but... I accidentally bought the wrong item for my needs, so I opened the package once but haven't used it. The following is quoted from the internet: Brand → Buffalo Hardware Interface → USB, Bluetooth Color → Black Compatible Devices → Desktop computers Data Link Protocol → Bluetooth | USB Item Weight → 30 grams [Compatible Models] Windows PCs equipped with a USB port (Type-A) [Supported Profiles] A2DP, AVRCP, DI, DUN, GATT, HCRP, HFP, HID, HOGP, OPP, PANU, SPP Communication distance: Up to 40m (varies depending on the usage environment) Easy connection, just plug it in Turns your computer into Bluetooth compatible Supports Bluetooth Ver. 5.0 with improved communication performance Supports low power consumption mode Bluetooth(R) Ver. 5.0 has improved communication range and speed compared to Bluetooth(R) Ver. 4.0. It has backward compatibility and can also be used with devices of previous standards such as Bluetooth(R) Ver. 4.0/3.0/2.1. It is widely compatible with Bluetooth(R) devices. *When using in Classic mode, it is equivalent to the previous standard. *The values ​​listed are theoretical values. They vary depending on the usage environment.