The xbox wireless adapter - help p2

[MrHoustonp]

So I need one ja

But I was in game last week and was about to pay for one at the till ( the black one ) and a gent in front was bringing one back, I listened in and then asked him why and he said this was his 3rd one he's brought back because it doesn't work, something to do with the disc and the fact group 'N' wont work in the average house

So what's best, the white or black? Do they do the same job? I don't want to buy 1 and end up having to take it back