General Knoppix support for those who've read the FAQ at the Wiki
A-Tech 8GB DDR3 1600 PC3-12800 Laptop SODIMM 204-Pin Memory RAM PC3L DDR3L 1x 8G
$13.99
Micron 16GB DDR4-2400 SODIMM MTA16ATF2G64HZ-2G3E1 Laptop Memory RAM
$21.99
32GB 2x16GB DDR4 2666MHz PC4-21300 260-PIN SODIMM MEMORY KIT 27" IMAC 2019/2020
$75.00
Crucial DDR3L 16GB 1600 2x 8GB PC3-12800 Laptop SODIMM Memory RAM PC3 16G DDR3
$22.45
CORSAIR - VENGEANCE LPX 32GB (2x16GB) 3200MHz DDR4 C16 DIMM Desktop Memory
$59.99
TEAMGROUP T-FORCE DELTA RGB 32GB (2 x 16GB) (DDR5-5600) DIMM CL30 ff3d516g5600h
$69.99
Crucial 8GB SO-DIMM PC3-12800 (DDR3-1600) Memory
$9.49
A-Tech 8GB PC3-12800 Desktop DDR3 1600 MHz Non ECC 240-Pin DIMM Memory RAM 1x 8G
$13.99
A-Tech 64GB 2x 32GB 2Rx4 PC4-23400R DDR4 2933MHz ECC REG RDIMM Server Memory RAM
$109.98
A-Tech 64GB 4x 16GB 2Rx4 PC4-19200R DDR4 2400MHz ECC REG RDIMM Server Memory RAM
$87.96