TP-LINK’s N600 Wireless Dual Band PCI Express Adapter, TL-WDN3800 means that you can connect a desktop computer to a wireless network & access a high-speed wireless network connection. Complying with IEEE 802.11 a/b/g/n, the device can use the 2.4 G Hz or 5 G Hz channels & provide wireless speeds of up to 300 Mbps which is ideal for users seeking a highly robust, bandwidth intensive wireless networking experience, particularly with HD video streaming & online gaming. Dual Band is the latest wireless technology allowing the adapter to connect with a 2.4 G Hz or 5 G Hz network. This means that you can check e-mail & browse the Internet using the 2.4 G Hz band or stream HD movies & other media on the 5 G Hz b&. The advantage of working on the 5 G Hz band is that, unlike the crowded 2.4 G Hz band shared with microwaves, cordless phones & other wireless networks, it has much less interference & can provide a more stable wireless signal, which is ideal for online gaming & HD video streaming. Achieves a maximum theoretical throughput of up to 300 Mbps Supports dual-b&, 2.4 G Hz or 5 G Hz Seamlessly compatible with 802.11a/b/g/n products Experience smoother video streaming & online gaming by choosing the clearer 5 G Hz band for wireless connections Supports 64/128 WEP, WPA /WPA2/WPA-PSK/WPA2-PSK (TKIP/AES), supports IEEE 802.1X Supports Windows XP 32/64bit, Vista 32/64bit, Windows 7 32/64bit Supports ad-hoc & infrastructure mode Bundled utility provides quick & hassle-free installation