In the link above, Dish is even recommending this drive for the ViP211. So, as stated previously, any MPEG-4 Dish receiver should work with this just fine.But the drive linked above works fine on my H1, despite Dish's statement to the contrary.
Edit: I just remembered that my H1 is not an original model. I think it's an "H1 Version 2" or something. My original H1 failed, so Dish sent a replacement which I noticed was a little faster (but it does not have built-in Sling). Not sure if that makes a difference.