Have you Googled the hard drive's model number? The manufacturer usually gives a good explanation of the jumpers.
My WAG (wild assed guess) would be that you need 6 (last device on the internal chain) and maybe 7. I would be tempted to try it without 8 & maybe 9. Maybe the docs will better define the difference between 9 & 10 (They seem to be the same thing). There should be no harm in trying these combinations.
If the drive came this way from a working Mac, that's a good sign that 8 & 9 are needed.
Sorry, I have not stumbled into any Hp drives yet.
EDIT: I lost my HD8+, but you may have an issue with the Rom in the HD8+ and the maximum size HD you use with it. I don't remember this well at all. I think the last rev Rom will work with a 4.2 Gig drive.
