Specification :

The Huawei E156G is preloaded with 3 Mobile's Birdstep dashboard, which is amazingly easy to use. You will also never have to spend time updating because it'll update itself, and as an added bonus it links directly to My3 from your desktop.

USB modems have never been easier to use. Simply plug your Huawei E156G into your USB slot and it will quickly install itself while you sit back and relax. You only need three things to use your Huawei E156G USB Modem from 3 Mobile: one available USB port, at least 50MB of space on your hard disk, and a Mac OSX or Windows 2000, XP, Vista operating system.

Huawei E156 Specification

Size
Dimensions: 70.1×25.6×11.6mm
Weight: 30g

Maximum download speed:
3.6 Mbps

Maximum upload speed:
384 kbps

Compatible with:
Windows (2000, XP, Vista) and Mac (10.4 and 10.5)
3customised dashboard (Birdstep)
MicroSD slot (up to 4GB)
External antenna interface

What's in the box :
USB Data Modem
USB cable
User guide