File:30pin SIMM RAM slots, from an Atari STE motherboard.jpg - Wikimedia Commons
16MB 4x 4MB 30pin SIMM RAM MEMORY without parity 4x8 30-pin Apple Mac PC - Walmart.com
FUJITSU HY4495_909 80 ns 72-pin SIMM RAM memory card 8 x FUJITSU 814400-80 I.Cs on eBid United States | 174426034
I'm quite excited to hereby introduce fist prototype of SIMM RAM 30pin 4MB x 9 with parity. This is 4 layer PCB - if it works -> then redesign to 2 layers