Quote Originally Posted by SYNACK View Post
So there may be hope after all for the current D-Link ones as they conform to the generic standard. We ended up grabbing a couple and the supplier assured me that the current ones would play nice. Hopefully he was right otherwise I'll need to investigate some specially compatible ones or rearrange the switch deployment to compensate.
HP State that only HP Gbics are supported (what a surprise!). I've had non HP older ones that stopped working after a firmware update. From time to time they also stop various fake HP ones from your local ebay seller working too.

Non HP parts also invalidates the warranty (I just read it to check). I'm sure you may find some that do work, just be prepared for the fact that after a future update this may not be the case anymore (you get a nice error light until you unplug it).