Here is a warning. Yesterday Dish Network sucessfully killed many of its yellow cards used by pirates. These scums will try to peddle their useless icescrapers on ebay. Please deal with Dish Network directly or trusted Dish retailers for any cards.
I know people that bought the yellow card on ebay and re-activated their 301 receivers, instead of activating with the old blue card, and waiting on the yellow card from Dish.
Dish tried to charge me $50 plus a $14.95 shipping fee when I had to get a new yellow card on my old 301 that never got swapped out from blue. Needless to say, I refused. I had to ask twice that they were talking about just a card and not a whole replacement receiver.
dish cards are for sale on ebay while directv cards are not!