Updating a mac g3
However the first model, the 350MHz version, does not have Fire Wire.
Although this page covers a number of versions, all the upgrades available are the same.
Both the internal and external components changed greatly.
The motherboard changed to a 100MHz board which accepted the cheaper and larger SDRAM DIMM memory, instead of SODIMMs as used on the tray-loading i Mac.
These instructions assume you know and understand this danger. Turn your i Mac so that the display is face down (a soft cloth can reduce scratching).