Samsung 8GB DDR5 4800MHz PC5-38400 CL40 SODIMM
This is the cheap DDR5 laptop stick I used for the experiment—an 8GB 4800MHz SO-DIMM that’s basically the “does it boot?” test case. If you’re trying the adapter route, a basic JEDEC stick like this is a straightforward way to see if your platform will play nice.
You'll be taken to Amazon to complete your purchase.