Transcend M.2 2230 NVMe SSD, Up to 3,300MB/s Read, PCIe 4.0, 512GB–1TB

M.2 2230 is the handheld and tablet size — Steam Deck, ROG Ally, Surface Pro, Legion Go — and this card is single-sided, which those chassis require. Gen4x4, with an SLC cache and host memory buffer in place of onboard DRAM.

A device whose slot only runs at PCIe 3.0 will never see the Gen4 rating, so compare the Transcend M.2 PCIe Gen3x4 2230 NVMe Internal SSD with Speeds on price in that case.