Any difference between Apple MA591G/A or MA591G/B dock cables?

I have just ordered an Apple Universal Dock (Model MB125G/C), and need
to order a USB dock cable to hook it up to my Mac.

Apple is currently selling the Apple Cable MA591G/B ... but I was wondering
if the previous Apple Cable (MA591G/A), would work with the newer Universal iPod Dock?

I will be using the new dock with a 3rd gen. iPod Touch.

Any info would be appreciated.