Some positively-rated Bluetooth wireless adapters, according to Consumer Top, are the Satechi USB 4.0, Panda Bluetooth 4.0 USB nano adapter, and the Kinivo BTD-400 Bluetooth USB adapter. Class 1 Bluetooth devices have a transmission range of up to 328 feet, while Class 2 have a range of up to 32 feet.
The Satechi USB 4.0 is a Class 2 USB 4.0 adapter that is 32 bit and 64 bit compatible. It allows for transfer speeds of up to 3.0 Mbps. The adapter is easy to setup and run with plug and play, and it's compatible with Windows XP, 7 and 8 operating systems. It's also backward compatible with other earlier Bluetooth versions.
The Panda Bluetooth 4.0 USB nano adapter is small and portable. It is a Bluetooth 4.0 adapter with low energy and EDR or Enhanced Data Rate support. It is compatible with Windows XP, Vista, 7, 8 and Linux operating systems. Being a Class 2 adapter, it has a range of up to 32 feet; however, when connected to a Bluetooth Smart device, it can go all the way to 82 feet.
Another Bluetooth 4.0 and Class 2 adapter is the Kinivo BTD-400 Bluetooth USB Adapter. It has a range of up to 65 feet with speeds of 3 Mbps. It's small, which stops it from blocking other USB ports. It works on Windows XP, Vista, 7 and 8 operating systems but doesn't support Mac or Linux. Its equipped with low energy technology that is especially useful for laptop users.