Grid K2 -different versions?

Hi all,
I am about to buy a Grid K2 for vsga in a vmware esx 6.5 server. On ebay there are many listings, and some list with a dell part number (KVJ6K).
Are these physically or software-wise different from others, or in general are there different versions of these cards that will only work in specific systems? Or do som just happen to have a dell stock number?

Don’t want to buy one that does not fit or work. I have a hp proliant ml350P G8, vmware 6.5U3.

Thanks in adwance,