Wi-Fi USB adapter with an external RP-SMA antenna connector. This adapter can be used to increase the reach of the Raspberry Pi Wi-Fi, to enable Wi-Fi use even with a metallic enclosure, or to connect to multiple Wi-Fi networks simultaneously.
This Wi-Fi USB adapter uses the RT5370 chipset that is natively supported by the Linux kernel. No worries about the Wi-Fi network going belly-up when the Linux kernel gets updated!
The adapter supports 802.11n Wi-Fi in the 2.4 GHz band. The maximum transmission speed is 150 Mbps.