@XavierGr
1. the OF would not go near the disks as supplied, they needed initialising, then partitioning/formatting on a PC. I had hoped that the OF would do it all but the formatter just bombed out on both machines.
2. Should have taken a photo when I had it in bits - there's a right angle adaptor that the HDD plugs into, this then goes and meets the motherboard in one of those low profile flexi sockets. (from memory - I love my H320 too much to want to go taking it to bits again till I need to)
3. have ordered from eBay. Hong Kong, China and the US are good sources - there seem to only be two basic designs. There was a guy on there in the UK who blew up his H320, ordered a caddy from China to recover the stuff off the disk and sold it for more than it cost him ;-)
@scorche
Oops, that was a pretty basic miss on my part, too much time digging into the detail and I missed the obvious.