Need some info on chips and Swap Disks

Since the vast majority of games just suck in this day and age, I felt like getting out my PS2 and trying to make it able to run backups once again. Since it's the last model (or one of the latest) FreeMCBoot doesn't quite support it because of the different drivers for the disk reader apparently, so looked for alternatives. My model is SCPH-90004 for reference. Now, I found two things that are available and I can buy from someplace that's not ebay or something similar.

First one is a chip...

Need some info on chips and Swap Disks