Apr 19, 2021 · For the case of the Lexar NM620, it looks like the controller is a rebranded Innogrit IG5216 Shasta+ controller, possibly with custom firmware. The Lexar DM620 controller has support for NVMe 1.4, over four channels. The Lexar NM620 is available in capacities of 256 GB ($45), 512 GB ($90), and 1 TB ($160).