We have been fielding numerous queries about the RAM expansion options for Lombard, a.k.a. the PowerBook G3 333/400. According to page 69 of the Lombard Developer’s Note:

Total RAM capacity using the highest-density devices available is 384 MB and is limited by the space available for the SO-DIMMs. The bottom slot can accommodate a 1.5-inch SO-DIMM with up to 128 MB of SDRAM. The top slot can accommodate a 2.0-inch SO-DIMM with up to 256 MB of SDRAM.

PowerPage sponsor Trans International has posted a technical note on expanding Lombard RAM that illustrates the differences between the 1.5-inch and 2.0-inch SO-DIMM modules and their locations.

More information is available in our Lombard FAQ.