The PS5's storage space can be expanded with an external USB device--as long as you have the right hard drive.

Even if you're not going on a business trip, you might like to install Chrome on an external hard drive and run it from any computer that has Internet access.

An external hard drive is an alternative method to installing a microSD card. However, it's better to keep the Steam Deck docked and use it like a desktop PC to do this.