Notebook Ram swapped from 4GB to 8GB. What do you do with the 4GB RAM?

Notebook Ram swapped from 4GB to 8GB. What do you do with the 4GB RAM?

Sell on Ebay.

Gaining money from it, look at slivki show

Try to sell on a stock exchange.

To buy a SO-DIMM → DIMM adapter https://www.ebay.de/...=138407183 what I would not recommend in a gaming pc, if then in office PCs or something

Not even there. Laptop RAM is pretty slow.

Why should 2400mhz ram in an office pc is not enough?

That depends on the CPU, which costs a lot of performance at Ryzen

But in an office PC, Office PCs do not need much power