Hi,
The safest way would be to upgarde to 7.2 witn patch P10 and you would have an "officially" supported environment for your 5510.
If for any reason you cannot do so, you might start a manual integration:
- Add "Device Series" and "Device Model" according to the screen shot supplied by NeilR.
Beware that you will then have a "Custom-defined" switch with a supported ObjectId, so if you decide to upgrade later on you might have to delete your "custom 5510" to avoid oid conflict.
I have no experience with device panel pack, but I have exported mine from the 11 (HP) EnterpriseId. It looks they are dealing with native HP devices only, not H3C rebranded, and I cannot find any H3C EnterpriseId (25506) either ... so I cannot really help here.