The new Nintendo Switch 2 comes with 256GB of storage built in. That's eight times more than the original Switch and four times more than the Switch OLED. But the new console's improved performance means that some games will hog a ton of that space: Cyberpunk 2077is a 59GB download, for one, while Split Fictionchecks in at 69GB. Other titles aren't nearly as big - particularly those made by Nintendo itself - but chances are you'll eventually want to add more room to the device.When you do, you'll need a microSD Express card. These are not the same as the standard microSD cards you may have bought for the first Switch or other gaming handhelds - they're newer, faster and significantly more expensive. But if you want more space, they're your only choice. If you're looking to grab one today, we've laid out the best microSD cards for the Switch 2 and broken down what you should know before you buy.The best microSD cards for the Switch 2 (and why you might want to wait to buy)The SanDisk microSD Express Card and Lexar Play Pro.Jeff Dunn for EngadgetThe Switch 2 is the first mainstream device to require microSD Express for storage expansion, so there aren't many options available to buy just yet. To make things easy, here's a list of every microSD Express card we've seen at retailers at the time of writing.128GB