The d4995t, m9000z and m9000t Pavilion Elite models, will all have the option to add the mixed format drives but there will be two options for the drive as well. A basic version will allow only Blu-ray writing and both format reading and the more expensive drive will allow writing and reading for both formats. Both drives will also include HP's LightScribe feature.
The cost of the upgrade will vary from $250 to $400 USD depending on the system and the drive you are upgrading to.
Source:
Electronista
Written by: Andre Yoskowitz @ 7 Oct 2007 19:59