MaxPlus by MacMemory upgrade

MOT

New Tinkerer
Jul 21, 2026
1
0
1
I recently purchased a Mac Plus and when I opened it there is this weird looking part next to the floppy drive. It says "Max Chill" "MacMemory" on the side.
IMG_4339.jpeg


When I searched for what it was I found out it was a fan for a memory upgrade. When I pulled the board I found this.

IMG_4338.jpeg

It looks like all of the original memory is on carrier board and a new over oversized memory stick is in the second slot.

I haven't gotten it to boot into an OS yet but it does seem ok since it's just searching for a disk currently.
 

Mark_W

Tinkerer
Feb 2, 2026
40
29
18
There's one for sale on ebay right now:


Seems like it's used to combine 4x256kb sticks into a single 1mb stick, before 1mb sticks are widely available. Don't think it's very useful today since you can easily find 1mb sticks to max it out, but still a cool collection piece