A friend is looking for one so I looked on eBay and found two models of interest: TS-LB23L and CT21L
The first one seems nice but I cannot find any information about it. There is firmware for the TS-LB23A and D but not for the L. On the other hand, the picture of the drive does show HP so it's very likely that LS is supported.
The second is also interesting as RPC2 Auto-Reset could possibly work by using devilsclaw's flasher and MCSE. HP logo is not shown on the drive. It's also a bit more expensive.
edit: I forgot: This needs to be a laptop drive. USB connectivity is not desirable.