The Nintendo Switch starts with just 32GB of internal storage—barely enough for a few games and apps. The fix? A microSD card for seamless expansion. Whether you're adding one for the first time or upgrading to a larger card, I'll guide you through the process step by step, based on hands-on testing with models including the OLED version.
First, back up your games to a computer via microSD for peace of mind. eShop titles are tied to your account, so you can re-download them, but local backups save hours. I've relied on this method countless times during upgrades.
Game saves, like your Breath of the Wild Master Trials progress, stay safe in internal memory as long as you archive without deleting.
You'll need: a computer with space, a microSD card adapter (if no slot), and a UHS-I microSD (60-95MB/s speeds; faster is better). Stick to one card per Switch to avoid issues. This works identically for original Switch and OLED models—do it in handheld mode near your PC for easy access under the kickstand.
If internal storage is full, here's how to move games. I tested this by shifting Super Smash Bros. Ultimate to a 128GB SanDisk microSDXC UHS-I card.
To swap for more space or speed, use a computer.
If issues arise, delete files from PC and re-download from eShop, forcing to microSD if needed.
You're set—expanded library ready!
Updated March 4: Originally published March 8, 2019. Confirmed process matches Nintendo Switch OLED; note Nintendo Switch Lite storage cannot be upgraded.