TP-Link NT Wireless TL-WN821N N USB AdapterAtheros2T2R 2.4Ghz 802.11g-b-nD

Software Specification
Standards: IEEE 802.11n, IEEE 802.11g, IEEE 802.11b, CSMA/CA with ACK
Wireless Signal Rates With Automatic Fallback:
11n: Up to 300Mbps(dynamic)
11g: Up to 54Mbps(dynamic)
11b: Up to 11Mbps(dynamic)
Frequency Range: 2.4-2.4835GHz
Wireless Transmit Power: 20dBm(MAX)
Modulation Type: OFDM/CCK/16-QAM/64-QAM
Receiver Sensitivity:
270M: -68dBm at 10% PER
130M: -68dBm at 10% PER
108M: -68dBm at 10% PER
54M: -68dBm at 10% PER
11M: -85dBm at 8% PER
6M: -88dBm at 10% PER
1M: -90dBm at 8% PER
Security: 64/128 bit WEP, WPA/WPA2, WPA-PSK/WPA2-PSK (TKIP/AES)
Support Operating System: Windows 2000/XP/Vista
Hardware Specification
Interface: USB 2.0 Hi-Speed
Antenna Type: Internal Omni-directional Antennas
Certifications: CE, FCC
Operating temperature: 0C-40C (32F-104F)
Storage temperature: -40C-70C (-40F-158F)
Relative humidity: 10% - 90%, non condensation
Storage Humidity: 5% - 95% non-condensing
Dimensions: 3.7 x 1.0 x 0.4in. (93.5 x 26 x 11mm)
Packing Dimension (L x W x H in inches): 9"x2"x6"
Weight: 0.5lbs