The ones that work for our macs, what is the difference in these besides the price? I can't pick out which one to buy....
http://www.newegg.com/Product/Produ...E&N=2010260381 1309121116&bop=And&Order=PRICE
http://www.newegg.com/Product/Produ...E&N=2010260381 1309121116&bop=And&Order=PRICE