Features: brand new and high quality Supports both 2.4GHz and 5GHz bands work. The use of wireless technology, users can freely choose one according to the surrounding environment and the terminal equipment in a working band, effectively avoid wireless interference and network congestion, wireless signal stability, speed and smooth! Need to meet the 5G 5G routing function can only be used to support. Product condition: Used(Tested before shipment). Application: STB,IPTV,Desktop,Laptop,for hdmi,GPS,IP Camera. Operating System: for Windows 8.1, 32 bit/64 bit, for Windows 8, 32 bit/ 64 Bit, for Windows 7, 32bit / 64 bit, for Windows 32 bit/ 64 bit, for Windows 10 32 bit/64 bit, Linux v2.6.1.3/ for Mac 10.7,10.8,10.9. Specifications: Main Chipset: RT5572N Host interface: USB 2.0 Type A LEDs: None Antennas: 2 built-in onboard 2.4/5 GHz PCB antennas. Operation Frequency: ISM band , 2412~2483.5MHz , 4915~5825MHz(Detail frequency range depends on country region). Typical Transmit Power (before antenna): 802.11a (OFDM) 54Mbps: 10+/-1dBm 802.11b (cck) 11Mbps: 18 + /-1dBm 802.11g (OFDM) 54Mbps: 15+/-1dBm EVM <-31dB 802.11n (HT20 MCS7), 15+/-1dBm,(HT40 MCS15),14+/-1dBm Receive Sensitivity (after antenna): 802.11a: -66+/-1dBm 802.11b: -88+/-1dBm 802.11g: -73+/-1dBm 802.11n (HT20), -70+/-1dBm;802.11n (HT40), -72+/-1dBm Security: WEP 64/128, Wpa / Wpa2 (TKIP,for AES); wapi; Voltage Range/Current: for DC 5.0V ± 5% / <330mA 802.11g;3.3VDV± 5% <350mA, 802.11n,HT40 Package Includes: 1 x Wireless USB Adapter note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!