Like the Game Boy? Or the 3DS?

The Switch v1, not the v2 OLED. The 3DS had their own memory card “format”

op00to 6 days ago | parent | next [-]

I was thinking more like the power adapter. Game Boy always seemed to have a proprietary adapter.

The 3DS family of devices used standard SD and micro SD cards.

	▲	reactordev 8 days ago \| parent [-]
		The games, not the expansion. You could throw any microsd card into your 3DS to get more storage. I’m talking about the memory card the games are written on.