<snip> Plug your serial number in here >to find out for sure: >http://www.chipmunk.nl/klantenservice/applemodel.html thanks for the link I confirmed my Mac is a: Name: Power Macintosh G4 (PCI Graphics) Model: Mxxxx PowerMac G4 400MHz Bus speed: 100MHz Factory: CK (Cork, Ireland) Unfortunately the hdd died, so it's now got a 40gb maxtor and I can't restore the OS, so I just put Xubuntu Linux on it (alternative CD) as it only has 192mb Ram, until I can get hold of a retail copy of OS 9 and some more Ram... I'm out of PC100... I'm waiting for some autions to come up on eBay. At least it seems to working fine OK anyway. I had it surfing quite happily last night. I'd very much like to know more about the chip architecture. I'll probably see if I can dual boot it once I get OS 9... just because I can. LOL Is it possible to upgrade the cpu on this? And what about the graphics card? Celia _________________________________________________________________ Upload 500 photos a month & blog with your Messenger buddies on Windows Live Spaces. Get yours now, FREE! http://specials.uk.msn.com/spaces/default.aspx