HP Omnibook 4500, new DVD unit

Looking for a new DVD unit for a HP 4500 Omnibook XE, but I don’t know what will fit, I was thinking maybe the ND-6500A DVD writer, but it seems so many laptops use proprietary hardware and standards are lax so I am not sure what to buy.

Any reccomendations on DVD-roms or writers would be welcomed too

The 6500 should fit.What optical drive do you have in the laptop right now?

The optical drive in the laptop now is a DVD-ROM of unknown make, came with the laptop.

Do you know any laptop DVD-roms? Don’t think I need a burner in the laptop, already got the ND-3500 for the desktop.