Is (P)ATA supported by...

You can also search on Amazon for SATA controller cards as well if you feel the need to move to this drive.

I wonder then why it describes itself as 'S/ATA' and not 'SATA'?

Punky is right, it's just a naming thing.  Before SATA there was just ATA... we never talked about PATA, and another name for ATA was IDE or you might have seen it as EIDE.  Sometimes the names really meant different things, but over time convention changed how we talked about them.  When SATA came along we needed another way to talk about the old ATA so PATA was created.  SATA and S/ATA or any variation of that like (S)ATA would all be the same thing.

Pity. I thought it might mean it could use ATA too. Any suggestions for a good IDE disk?

I stick with name brands like Seagate and Western Digital.  I've had bad luck with Maxtor and some others. I'd look and find a good Seagate or WD in a size and price that fits your budget. I've bought all different sizes of these brands over the years and have had real good luck with them.

I like Hitachi or Samsung hard drive, but Seagate is still OK but I recommend not to buy drive that has mass storage capacity from 750G and up since they are hot during operation and you might have to add system fans!

Better infor: http://www.harddrivereport.com/pata_vs_ata_vs_sata_vs_ide.html