I think Al said he might have found some reference that proves that the IOP firmware was actually ported by HP to the E. Can you confirm? -- The part numbers for the E version appear in the 2000 section of the M/E/F CE manual. It has 6 proms listed instead of 12. I still think it's possible to convert the MX version to the E. Bob and Mike figured out what the instructions do (from memory something like cnvrt isn't even used..)