Start with iPod

Hello,

I fell into the iPod glass hole on YouTube, and I admit that I find that my relationship with music is completely broken, so I want to buy a 5th generation iPod (because from what I understood it would have the best DACK)

However, on the VINTED ad it announces that potentially the hard drive is H.S

so quick question, if I buy it I can obviously change the hard drive with an EOE SD card. but I mean how can I be sure that it is only the hard drive and not another part?

The seller tells me that it displays this

https://preview.redd.it/a5lh9ek4tcde1.jpg?width=1125&format=pjpg&auto=webp&s=1fa6b180b72fbb358dd2cc763020fe36004d45ff