T-Mobile’s webConnect Rocket USB Laptop Stick is aptly named because it’s a mobile broadband missile. On the outside, it offers a similar appearance to the current 3G webConnect USB adapter that T-Mobile sells — a USB interface, software included on the device for plug-and-play installation, and a microSD memory card slot. It’s what’s on the inside that shoots you to the moon — a 3.5G radio that maximizes bandwidth on T-Mobile’s upcoming 21 Mbps network. I got a chance to test this device on T-Mobile’s 21 Mbps test network and it was blazing fast! Here I show off a speed test, podcast download and 720p YouTube stream over the 3.5G network. And I couldn’t help myself by testing a Google Nexus One on the network while I had a chance = 4 Mbps downloads!