10 Screws at base of PS2 Version 1, 2 and 3
USA SCPH 30001 Version 1 = Serial Number begins with U1 Date Code 0D
USA SCPH 30001 Version 2 = Serial Number begins with U0 Date Code 0D
USA SCPH 30001 Version 3 = Serial Number begins with U1 Date Code 1A
USA SCPH 30001 Version 3 = Serial Number begins with U2 Date Code 0D


8 Screws at base of PS2 Version 4,5 and Electrical warning stamped on the bottom
USA SCPH 30001 Version 4 = Serial Number begins with U0
USA SCPH 30001 Version 4 = Serial Number begins with U1
USA SCPH 30001 Version 4 = Serial Number begins with U2
USA SCPH 30001 Version 4 = Serial Number begins with U3
USA SCPH 30001 Version 4 = Serial Number begins with U4
USA SCPH 30001 Version 4 = Serial Number begins with U5
USA SCPH 35001 Version 4 = GT3 Edition


There are 3 Motherboards for the SCPH 30001R, Version 4, 5 and 6 (5 and 6 are the same)
USA SCPH 30001R Version 5 or 6 Motherboard see below to ID
USA SCPH 39001 Version 7



PS2 Verion v11
Only released in Europe. The model # is SCPH-50004 with a GH-027 or GH-029 board. Same board as v10 but console comes with a new laser unit.
DMS4 EZI Pro DMS4 EZI Lite DMS4 Pro DMS4 Pro SE DMS4 Lite SE Matrix Infinity Green Dot Matrix Infinity Crystal CC1.1 ModBo 2 DUO2 SE MagicV Plus 5k6 Apollo7 MarsIII Slide Card and Slide Card Pro will work on a v11

PS2 Verion v12
The new mini PS TWO SCPH-7000x

SCPH-70011 CB (for North America)
SCPH-70012 CB (for United States)
SCPH-70002 CB (for Oceania)
SCPH-70003 CB (for UK)
SCPH-70004 CB (for Europe)
SCPH-70000 CB (for Japan)

DMS4 Pro DMS4 Pro SE DMS4 Lite SE Matrix Infinity Green Dot Matrix Infinity Crystal CC1.1 ModBo 2 Magic Key II Set and Slim Kit Pro Set will work on a v12

PS2 Verion v13
SCPH-70001 (for North America)
The Warranty Sticker location has moved from the back and is now intentionally located directly over one of the (6) screws on the v13 underside.

Another major change includes the removal of the Phone Line from the back of the v13 console, however, the Network Line is still present for on-line gaming fortunately. Lastly, there is a small layout change around the Motor Driver IC of the PSTwo mainboard (now GH-032-XX), and the Laser Lens is number PVR-802W with the BiOS IC being number B1110A D1010U.
Click here for more info

SCPH-70004, 70003, 70002 (for PAL = EUROPE/AUSTRALIA/ISRAEL)
Mainboard is GH-032-13, Laser Lens is number SPU3170G and the BiOS IC is MX Brand B2110A D1010U.
Click here for more info

DMS4 Pro DMS4 Pro SE DMS4 Lite SE Matrix Infinity Green Dot Matrix Infinity Crystal CC1.1 ModBo 2 Magic Key II Set and Slim Kit Pro Set will work on a v13


PS2 Verion v14
Latest slim PS2 release.

SCPH-75001 (for North America)
The motherboard is a bit different from last SCPH-70011/70012/70001 versions.

Model Number: SCPH-75001 US, Console Version updated: v14, Main Board updated: GH-037-01, Laser Lens Number: PVR-802W, BiOS Part Number: B6120B D0020U, and DVD Control IC: SONY CXD 716080.
Click here for more info
SCPH-75004, 75003, 75002 (for PAL = EUROPE/AUSTRALIA/ISRAEL)

DMS4 Pro SE DMS4 Lite SE Matrix Infinity Green Dot Crystal CC1.1 Magic Key II Set and Slim Kit Pro Set will work on a v14

I've read something almost exactly like this before.