[ram55]

Can someone tell me what theses terms mean and how one would tell if a machine (G3 B&W) is A or B.

Thanks

 

[iTony]

xlr8yourmac.com . There's also a brief one on Lowendmac.com

 

[MacDoc]

These are the two key ones - everything else might be a replacement but these are the two key items. The -402 on the chip is the ticket to a REV B.