I found this IIGS 4MB RAM card on eBay, and a subsequent search for the vendor turned up GGLabs, ‘Open Source Electronics from Silicon Valley.’ It appears to be a copy of the Applied Engineering GS-RAM III but it may only be a resemblance based on the type of RAM used (ZIP-20). More details (schematics, … Continue reading GGLabs, new RAM card vendor for the Apple IIGS