there is almost no chance the card that’s already activated to another device will work without un-re-pairing it to the new device. I’ve paired over 50 cards in the last couple years here in the Bay Area with Comcast and only had it work that way ONCE, and it was basically because the card was mis-paired to begin with (some channels didn’t work).
By all means doesn’t hurt to try, just mentioning my experience 🙂
