General Knoppix support for those who've read the FAQ at the Wiki
Kingston HyperX FURY DDR3 8GB 16GB 32G 1600 1866 1333 Desktop Memory RAM DIMM
$39.95
xpg ram ddr4 16gb 4133 (2x 8gig)
$25.00
A-Tech 8GB DDR3 1600 PC3-12800 Laptop SODIMM 204-Pin Memory RAM PC3L DDR3L 1x 8G
$13.99
Team T-FORCE VULCAN Z 32GB (2 x 16GB) PC RAM DDR4 3200 (PC4 25600) Memory
$54.99
Pair SK hynix 16GB (2x8GB) PC4-19200 DDR4-2400TMHz non-ECC SODIMM Memory Ram
$19.95
Pair SK hynix 16GB (2x8GB) PC4-19200 DDR4-2400TMHz non-ECC SODIMM Memory Ram
$19.95
Pair Micron 16GB (2x8GB) PC4-21300 DDR4-2666VMHz non-ECC Desktop Memory Ram
$19.95
Crucial RAM 32GB Kit (4x8GB) DDR4 2400 MHz CL17 Laptop Memory CT2K8G4SFS824A
$67.77
HyperX Fury RGB 8/16/32GB 2666 3200 3466 3600 3733MHZ DDR4 Desktop PC Memory RAM
$58.00
Microsoft Surface Pro 5 Tablet i7 8GB RAM 256GB SSD C grade | See desc..
$119.00