Super Speed USB 3.0 transmission speed is 10 times faster than USB 2.0, uses more fluently and effectively. compatible with USB 2.0 and USB 1.1 devices as well. Ultra-low-power design, energy saving Bluetooth Bluetooth version V5.0 Antenna Gain: 5dBi Hign-concerned Chemical:None Wi-Fi Supported Frequency:2.4G & 5G Transmission Speed:1400 Mbps The product appearance and printed words depending on the batch, but this does not affect use. Colour:Black & Green Material:ABS Package Contents: 1 * Wireless adapter 1 * Instructions in Chinese and English Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.