If you want to select an Bluetooth USB adapter with advanced Bluetooth technology, long distance and fast transmission function the HJSMT Bluetooth adapter is exactly what you want!  2 in 1 Bluetooth 4.0 + 150Mbps 2.4GHz USB WiFi Wireless Adapter  Technical Information:  1. Brand new and high quality. 2. Mini portable USB 2.0 design. 3. Wireless speed up to 150Mbps. 4. Quick secure setup. 5. Compatible with 802.11 b/g/n devices.  Bluetooth description: - Bluetooth version: Bluetooth 4.0 - The interface type: USB 2.0 / 1.1 - Frequency range: 2.412GHz - 2.482GHz - Working Channel: 0-78 - Modulation mode: GFSK, DPSK  Transmission distance: 10 meters farthest indoor and outdoor 20 meters farthest (varies with the environment) - RF power: 10dBm (max) - Antenna gain: 2dBi - Spread spectrum technology: frequency hopping - Support OS: Windows 7 / 8 / 8.1 / 10 / Linux  WiFi description: - Support standards and protocols: IEEE 802.11n, IEEE 802.11g, IEEE 802.11b, CSMA/CA with ACK - The interface type: USB 2.0 / 1.1 - Transmission rate: 150Mbps - Frequency range: 2.412GHz - 2.483GHz - Working Channel: 1-14 - Modulation: -- 802.11 g / n: OFDM -- 802.11 b: CK (11, 5.5Mbps), QPSK (2Mbps), BPSK (1Mbps) - RF power: 16dBm (max) - Antenna gain: 2dBi - Support OS: Windows / MAC / Linux            
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