The Tew-644UB is a TRENDnet Wireless N USB adapter. Today, everywhere you go users need to access the internet and computing services through wireless networks. It is however still common to find most of the desktop PCs and some older versions of laptops without a wireless network adapter. If you have such a PC, no need to throw it away or selling it off. The Tew-644UB is a TRENDnet Wireless N USB adapter can upgrade your desktop or laptop to wireless n. It is not only convenient but also very fast. Once you have inserted the device to your PC, you will need to download the TEW-644 driver here to fully enjoy wireless connectivity.