Gecko (HP 712/60)
My Gecko, the code name for the HP 712, runs NeXTSTEP 3.3. It's a neat little machine. It is PA-RISC based — HP's proprietary RISC architecture processors. Unfortunately the J6xxx were the last PA-RISC machines built.
If you are looking for a RISC workstation, and don't want to invest in special monitors or keyboards, this is the machine for you. It has PS/2 mouse and keyboard ports as well as a standard VGA port. The internal floppy drive is a standard PC drive, so replacements are easy to find. It also has an RJ-45 (Cat5) Ethernet connection.
Notes on SCSI and installation
The Gecko uses SCSI for mass storage, which can complicate installs. I describe an approach to install NeXTSTEP using network booting and external SCSI media on the original page.
For full historical details and references, some links from the original page are preserved.