It's the 3 Premium Dongle with a TP-Link 3G Router TL-MR3420. The dongle is also known as the Huawei E367.
I started with a 3 dongle in March 2011 which was a ZTE 112 which worked well, but upgraded it to the E367 when it was introduced and then cancelled my ADSL land line in August 2011 because 3G is much better than a land line at my location.
The Premium Dongle only has an allowance of 15GB/month but I also have a Samsung Galaxy S2 with "all you can eat" which tethers via USB or works as a wireless hot spot. Both devices support HSPA+ although it's not available at my location yet.
ASUS P7P55D-EVO, Intel Core i7 860, 8GB Corsair DDR3, Windows 7x64
Fractal Design R3 Black Case