Looking to expand your Nintendo Switch, Steam Deck, or ASUS ROG Ally storage? Amazon currently offers the high-performance 512GB Samsung Pro Plus microSDXC card for just $29.99—complete with a compact USB card reader. As one of the most trusted memory card brands, Samsung's Pro Plus delivers superior speeds compared to typical microSDXC cards, especially at this affordable price.
Samsung Pro Plus 512GB MicroSDXC Card - $29.99

Samsung Pro Plus 512GB MicroSDXC Card
$83.99 Save 64% $29.99 at Amazon
The Samsung Pro Plus is universally compatible with any device supporting microSDXC format, including Nintendo Switch, Steam Deck, and ASUS ROG Ally. This U3/A2/V30-rated card outperforms most competitors with sustained read speeds up to 180MB/s and write speeds of 130MB/s—perfect for demanding applications like 4K video recording on DSLRs or high-performance gaming on handhelds. The bundled USB card reader simplifies file transfers to PCs without requiring separate cables.
For Switch owners, this expansion solution proves particularly valuable. The original Switch (32GB) and Switch OLED (64GB) provide minimal onboard storage, with system files consuming significant space. Consider that digital versions of Tears of the Kingdom (16GB) and Breath of the Wild (13.5GB) would nearly fill a base Switch's capacity. With only one expansion slot available, opting for the largest affordable card (typically 512GB) covers most users' needs.
Nintendo Switch 2 Compatibility Note
This microSDXC card won't support the upcoming Switch 2, which will require microSD Express cards to utilize the console's advanced speed capabilities. While current UHS-I cards max out at 104MB/s, microSD Express models leverage PCIe/NVMe technology for transfers up to 985MB/s. Early adopters should note that microSD Express options currently carry premium pricing with limited brand availability.
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