Thought I'd do my part to boost the information trove here on the site. Here's a list of most of Sony's Dev hardware and debugger/testing units for the PS1. If you have any pictures of any of the models listed, please share with us! I will be posting pictures of units I have stored in my archive but please do share some new ones if you have them, or even take some for us if you have one of these units yourself! DTL-H1000 Original (Blue) Unknown (22/09/94) Rev. A NTSC-J Yes S-Video direct out. Debugger. DTL-H1000H Original (Grey) 1.1 (22/01/95) Rev. B DTL-H1001 Original (Blue) 2.0 (07/05/95) NTSC-U/C DTL-H1001H Original (Grey) Unknown (Unknown) DTL-H1002 Original (Blue) 2.0 (10/05/95) PAL DTL-H1100 2.2 (06/03/96) NTSC-J Has external power supply. DTL-H1101 2.1 (17/07/95) NTSC-U/C DTL-H1200 Original (Green) 2.2 (04/12/95) Rev. C NTSC-J DTL-H1201 NTSC-U/C DTL-H2500 Development Hardware which contains: DTL-2500 PlayStation emulation and profiling PCI expansion card. Controller adaptor daughter board. Controller and memory card expansion box (so you can use standard controllers and memory cards with the devkit). SCART lead to connect the devkit to a TV. Internal CD-ROM reader (DTL-2510). External SCSI CD-Writer (CDU921S) - with CD caddy. One PlayStation development controller.