If you're looking for a high-capacity microSD Express Card for Nintendo Switch 2, the Lexar Play Pro 512GB and 1TB models are on sale for all-time low prices at Amazon. The 512GB model is discounted to $88.47 (was $120), while the 1TB model is up for grabs for $158 (was $220). Outside of the officially licensed Samsung microSD Express, the Lexar Play Pro has been the most popular microSD Express Card on AmazonUp until recently, Walmart had the best deals for 512GB microSD Express Cards, but the retailer has raised the price on the Onn brand 512GB Express from $65.77 to $84.77. Similarly, the SanDisk 512GB Gameplay was bumped from $78 to $98 and is currently sold out. The Onn microSD Express remains the cheapest 256GB microSD Express Card despite a price increase from $35.77 to $46.77.Other notable options include PNY's 128GB microSD Express for $38.24 (was $45) and, of course, the officially licensed Samsung 256GB microSD Express for $59 at Amazon. The Nintendo-licensed Samsung card remains the most popular overall option by a wide margin.microSD Express Cards for Nintendo Switch 2Nintendo Switch 2 only reads microSD Express CardsBelow, we've listed every microSD Express card from reputable brands we could find at Amazon. At this time, the only officially licensed option is the aforementioned Samsung card. SanDisk is making its own Nintendo-themed edition, but it's still unknown when it will arrive and if it will move beyond. 256GB. The microSD Express market is still quite small, but the Switch 2 is the first major consumer device to use the ultra-fast storage format. The number of options has doubled multiple times over since Nintendo announced the Switch 2 requires microSD Express to expand storage.Notable microSD Express Cards at AmazonSamsung 256GB microSD Express (Nintendo Edition) -- $59Lexar 1TB Play Pro microSD Express -- $158 ($220)Lexar 512GB Play Pro microSD Express -- $88.47 ($120)Lexar 256GB Play Pro microSD Express -- $60PNY 128GB microSD Express -- $38.24 ($45)PNY 256GB microSD Express -- $60PNY 512GB microSD Express -- $120TeamGroup Apex 128GB microSD Express -- $46TeamGroup Apex 256GB microSD Express -- Sold outTeamGroup Apex 512GB microSD Express -- $100 ($120)TeamGroup Apex 1TB microSD Express -- $187 ($212)SanDisk 128GB microSD Express -- $60SanDisk 256GB microSD Express -- $72SanDisk 512GB microSD Express -- $120Notable microSD Express Cards at WalmartSamsung 256GB microSD Express (Nintendo Edition) -- $59SanDisk GamePlay 512GB microSD Express -- $98 | Sold outOnn 256GB microSD Express -- $46.77Onn 512GB microSD Express -- $84.77SanDisk 128GB microSD Express -- $60SanDisk 256GB microSD Express -- $73SanDisk 512GB microSD Express -- $120PNY 128GB microSD Express -- $38.24 ($45)PNY 256GB microSD Express -- $60PNY 512GB microSD Express -- $120Nintendo Switch 2 storage space can disappear fastThe Nintendo Switch 2 has 256GB of onboard storage. On the surface, this is a big leap forward, since it's four times larger than the Switch OLED (64GB) and eight times larger than the original Switch and Switch Lite (32GB). But the Switch 2's ability to run more graphically intensive games also means larger file sizes. For context, here are file sizes for several upcoming Switch 2 games published by Nintendo: Hyrule Warriors: Age of Imprisonment (44.9GB), Metroid Prime 4: Beyond (31.6GB), Kirby Air Riders (25GB), Pokemon Legends: Z-A (10GB). Other examples of games that are currently out: Zelda: Tears of the Kingdom (20GB), Mario Kart World (22GB), and Donkey Kong Bananza (8.9GB).You can save your storage space for those first-party games by grabbing physical editions, because Nintendo-published games have the full game file on the card. For third-party titles, outside of rare exceptions like Cyberpunk 2077: Ultimate Edition, physical games for Switch 2 are using Game-Key Cards. These are low-capacity cards that essentially serve as unlock keys to download the game from the eShop. So if you buy the physical edition of Madden NFL 26, you'll still need to download the the game's 55.3GB file from the eShop. Star Wars Outlaws, meanwhile, requires a 20.9GB download.A bunch of notable upcoming Switch 2 games with Game-Key Card editions also have large file sizes, including Borderlands 4 (48.8GB), Persona 3 Reload (25.4GB), and Dragon Ball: Sparking Zero (25GB). Final Fantasy 7 Remake Intergrade is currently expected to have an 87.9GB download on Switch 2, so that game alone will consume an enormous chunk of storage space.The prevalence of Game-Key Cards and larger file sizes for AAA games in general will likely cause many Switch 2 owners to run out of storage space even faster than they did on the original Switch.microSD Express: What is it?The Express format is a recent advancement in the semiconductor industry that hasn't been widely adopted by manufacturers just yet. If you're wondering why Express cards seem so expensive compared to the UHS-I cards you used on the original Switch console and most devices, it all comes down to speeds. For example, the SanDisk Ultra 512GB microSD Card has up to 150MB/s read speed, and the SanDisk Gameplay 512GB Express Card has 880MB/s--it's nearly six times faster. Express cards are markedly faster than SATA SSDs; the prices make more sense with this context.You can take a closer look at many of the microSD Express Cards from the lists in the gallery below.Sign up for GameSpot's Weekly Deals Newsletter: