The GW4401A 64-pin ROM SIMM replaces the 
ROM SIMM of a Macintosh II-series or 
Macintosh SE/30 computer. GW4401A comes 
preprogrammed with a customized, 32-bit clean 
Macintosh ROM. The customized ROM allows your 
Macintosh to use more than 8MB of RAM, 
and also features a 1.5MB bootable ROM disk 
preloaded with System 7.0 and several utilities. 


Ecologically Friendly, Gold-Plated PCB
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GW4401A features a lead-free, ENIG gold-plated,
4-layer PCB and is fully EU RoHS-compliant. 
All units are tested extensively before shipment. 
Only new parts are used to build RAM2GS II, 
and all GW4401A SIMMs are manufactured in our 
semi-automated facility in Columbus, Ohio, 
in the United States. 


Open-Source Design
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GW4401A's design is fully open-source. 
The schematics, board layouts, 
and driver software are all freely available 
for commercial and noncommercial use. 
To download the design files, visit the 
_Garrett's Workshop GitHub page_.