Razer People

Pretty much every mouse nowadays is USB. The Abyssus does not have side buttons, just left, middle/wheel and right. It's a pretty basic gaming mouse.
If you want some sidebuttons on a relatively simple Razer mouse, maybe a DeathAdder? If you're happy with your Logitech mouse just go for another one though, it'll most likely have a shape similar to what you're used to.

http://www.newegg.com/Product/Product.aspx?Item=N82E16826153056

1) Yes
2) Seems that it only has the mouse 1-3

i got the razor naga for the same price... it has 17 buttons in total that are adjustable and you can make macros on them.. really useful imo and better than abyssus

Dont buy razer worst quality ever ive had 4 things from them break within a year
also have friends who bought many things all broken
not from misuse died

Try checking their website and looking at the products directly from there.

Got a bodgy taipan 3 months ago. Got a refund. Try steelseries

Get a Desthadder 2013 Edition.

1. Geming mice use USB port.
2. Nope. The Try the Deathadder, Orochi, Naga and Taipan.

Answer for your question.

Yes, gold plated USB

and

No. Abyssus is one slim mouse with no side buttons.

Try Deathadder, the price aint that far. :3
Using it right now

DONT get it op. seriously. i have deathadder for my main pc and i bought abyssus for my second pc. but abyssus sucks, seriously. on the other hand, deathadder is like 59389583985 times better than abyssus. abyssus costed like 39euros and deathadder 50.

deathadder 2013 will fulfil all your needs, look no further i have it and its awesome