Dk'tronics also made the "[[Dk'tronics memory expansion]]". Not sure if/how it differs from the "Silicon Disc". Maybe it's just renamed and contains exactly the same hardware... or maybe one of the devices is battery-backed, and the other isn't...?
An article in Amstrad Action described how a Silicon Disk can be converted into a 256K memory expansion. I think this applies to the RAM part only.
[[Category:Hardware]] [[Category:Peripherals]] [[Category:Memory expansions]]