[jan-jaap]

The TMEZZ are the Texture Mezzanine cards. If you remove the graphics assembly from the system, and undo two nylon screws, yo can remove them from the graphics board. Irinikus is right -- you can run an MXE without the TMEZZ cards (it becomes an SSE). You have to remove both. I've seen this once maybe, and after cleaning the contacts with some pure alcohol, and re-seating them, the MXE worked fine again.