Wireless N USB Adapter TL-WN821N allows you to connect a desktop or notebook computer to a wireless network and access high-speed Internet connection. Comply with IEEE 802.11n, they provide wireless speed up to 300 Mbps, which is beneficial for the online gaming or even HD video streaming. With MIMO (multiple input, multiple output antennas) technology, it shows more excellent abilities of mitigating data loss over long distances and through obstacles in a small office or a large apartment, even in a steel-and-concrete building. Above all, you could easily pick up the wireless network during long-distance connection where legacy 11 g products may not! Device Type: Network adapter Form Factor: External Interface (Bus) Type: USB 2.0 Dimensions (WxDxH): 3.7 in x 1 in x 0.4 in Data Link Protocol: 802.11b, 802.11g, 802.11n (draft 2.0) Data Transfer Rate: 300 Mbps Frequency Band: 2.4 GHz Compliant Standards: IEEE 802.11b, IEEE 802.11g, IEEE 802.1x, IEEE 802.11n (draft 2.0) System Requirements: Microsoft Windows Vista / 2000 / XP Device Type: Network adapter Form Factor: External Interface (Bus) Type: USB 2.0 Connectivity Technology: Wireless Data Link Protocol: 802.11b, 802.11g, 802.11n (draft 2.0) Data Transfer Rate: 300 Mbps Frequency Band: 2.4 GHz Features: MIMO technology Compliant Standards: IEEE 802.11b, IEEE 802.11g, IEEE 802.1x, IEEE 802.11n (draft 2.0) Antenna: Internal Antenna Qty: 1 Directivity: Omni-directional Connections: 1 x USB 2.0 Encryption Algorithm: AES, 128-bit WEP, 64-bit WEP, 152-bit WEP, TKIP, WPA, WPA2, WPA-PSK, WPA2-PSK Compliant Standards: FCC Software Included: Drivers & Utilities OS Required: Microsoft Windows Vista / 2000 / XP Width: 3.7 in Depth: 1 in Height: 0.4 in Min Operating Temperature: 32 °F Max Operating Temperature: 104 °F Humidity Range Operating: 10 - 90%