What PS2 do I have? HELP!

[joeygame]

What version of a PS2 do I have? I've been researching the site and get conflicting results. Here's what I know.

SCPH-30001
(no R)

Serial U2851139

6 screws on the base + 2 on the edge base = 8 screws

There is an electrical warning on the bottom of the system.


I was told Version 3 because the serial starts with U2, but I only see 8 screws not 10

I was also told Version 4 because SCPH-30001 with the electical warning on the base and has 8 screws, but the serial starts with U2

Please help!