Is this a Version 5 or 6???
 

PS2 30001R USA
Serial U1542...
Date code 1C
PT21542
Screw in recessed area in expansion slot

thanks!
:)

It's a v5.

Cool thanks BH. My neighbor now wants a modchip since he has seen mine. But i'm gonna install the no-solder swap disc mod since i dont feel like solder 23 wires like i did on mine.

You're installing a no-solder !?

And you call yourself his friend ?

Yes a friend BUT not my bestfriend:D

its a v5 or a v6 the only way to tell for sure is open the ps2 and see what bios it has

I also was told to open it up and check the connector. If its right side up its one version and if its upside down then its the other version.

Taken from freedomlives.com

http://www.freedomlives.com/images/v5screw.jpeg

it has that screw so its a v5 - simple as warm apple pie.