The G110 packs its fair share of features. There's a USB port on the back, but more interesting are the microphone and headphone inputs. The G110 includes built-in USB audio processing, letting you hook up a set of headphones and a microphone (or a combined headset, of course) without the need for a soundcard.
I'm not entirely convinced this is a particularly worthwhile addition. The quality seemed as good as the Realtek chip on my motherboard, but that comparison betrays the flaw: most PCs already have audio processing. It's only potential benefits are in bypassing integrated audio that's of particularly poor quality, but this is an increasingly rare problem these days. Unless you have a specific need for it, then it's hard to justify the cost.
