Flash-based removable media has a host of use cases in products ranging from content capture devices to portable game consoles. Behind the standards of these is the SD Association, and we saw the introduction of an NVMe-based SD Express standard (SD 7.0) in 2018, with a SD 8.0 follow-up in 2020. SD cards, as well as card readers based on these new standards, have been making the rounds at various trade shows since 2019. However, none went on to appear in the retail market. That is about to change in the coming months, with both ADATA and Lexar announcing plans to launch their SD Express 7.1 cards within the next few quarters. The cards from both vendors are based on the Silicon Motion SM2708 controller. Read on for a detailed look at what the controller brings to the table for flash-based removable storage.