A novice messaging so please use plain words in reply. I need to increase my hard drive capacity. Is a diamondMax Plus9 120Gb UDMA133 compatible with my Mainboard? Mainboard is a LegendQDI Model PLATINIX-8 Version V1.XX
Your Mobo (motherboard) would seem to go to ATA100, as the link radi8tor supplied suggests. Maxtor's web site is singulaly unhelpful when it comes to the hard drive you mention. There is no mention about whether the drive is backwards compatable with ATA100 or not. Hard drives are normally backward compatable with previos specifications/standards. but maxtor don't say this for certian........
It does mean that you are looking at a drive that can go 'faster' than your mobo. It won't do any harm, but an ATA100 drive would seem to be suited to your Mobo, and might be cheaper for the same number of MB, as it is a lower spec.
Your best bet might me to e-mail the seller, and ask them. Is it is coming from a company or a private seller? If a Company and they say in writing that it WILL WORK and if it doesn't you can send it back as is is not what they said it was.