TP-LINK's 450 Mbps wireless N dual band PCI Express adapter, TL-WDN4800 allows you to connect a desktop computer to a wireless network and access a high-speed wireless network connection. Complying with IEEE 802.11a/b/g/n, the device can use the 2.4 GHz or 5 GHz channels and provide wireless speeds of up to 450 Mbps which is ideal for users seeking a highly robust, bandwidth intensive wireless networking experience, particularly with HD video streaming and online gaming. Device Type: Network adapter Form Factor: Plug-in card Interface (Bus) Type: PCI Express x1 Data Link Protocol: 802.11b, 802.11a, 802.11g, 802.11n Data Transfer Rate: 450 Mbps Frequency Band: 2.4 GHz, 5 GHz Compliant Standards: IEEE 802.11b, IEEE 802.11a, IEEE 802.11g, IEEE 802.1x, IEEE 802.11n System Requirements: Microsoft Windows Vista / XP / 7, Microsoft Windows Vista / XP / 7 (64-bit versions) Device Type: Network adapter Form Factor: Plug-in card Interface (Bus) Type: PCI Express x1 Connectivity Technology: Wireless Data Link Protocol: 802.11b, 802.11a, 802.11g, 802.11n Spread Spectrum Method: OFDM Data Transfer Rate: 450 Mbps Line Coding Format: DBPSK, DQPSK, CCK, 64 QAM, 16 QAM, OFDM Frequency Band: 2.4 GHz, 5 GHz Features: Ad-Hoc Mode Compliant Standards: IEEE 802.11b, IEEE 802.11a, IEEE 802.11g, IEEE 802.1x, IEEE 802.11n Antenna: External detachable Antenna Qty: 3 Directivity: Omni-directional Gain Level: 2 dBi Compatible Slots: 1 x PCI Express x1 Encryption Algorithm: AES, 128-bit WEP, 64-bit WEP, TKIP, WPA, WPA2, WPA-PSK, WPA2-PSK Compliant Standards: FCC, RoHS OS Required: Microsoft Windows Vista / XP / 7, Microsoft Windows Vista / XP / 7 (64-bit versions) Min Operating Temperature: 32 °F Max Operating Temperature: 104 °F Humidity Range Operating: 10 - 90%