I use a Nikon D500 for some of my photography. When I first bought storage media, I started out with a Lexar Professional 2933x 64GB XQD card and a Lexar Professional 1000X 32GB SDHC UHS-II card. In late 2020, Nikon released a firmware update to give the D500 CFExpress Type B support.
In early February 2022, Tom’s Hardware had a story about an Adapter (that) Turns SSDs Into Cheap CFExpress Cards. The Sintech CFexpress Type-B adapter uses a NVME M.2 SSD. So I bought an adapter and a Western Digital 256 GB SN520 NVMe SSD.
Assembly only requires removing the label from the SSD, applying some heatsink compound to the cover of the adapter and screwing it together. Before I plugged the SSD into the adapter, I used a little DeoxIT on the contacts.
The adapter and 256 GB NVME M.2 SSD cost me about $90. A quick Google search for a SanDisk Extreme Pro 256 GB CFexpress Card Type B found the best price to be around $279. I also had to buy a Sony MRW-G1 CFexpress Type B / XQD Memory Card Reader for $100, so there’s that.
I was a professional photographer in New York City for 20 years (in the film era). I definitely would not use the Sintech card for an assignment where money was involved. I would use a memory card that’s on the Nikon approved list.
In the future, I will do some testing on the Sintech card and will add the results. For now, the card does work in my Nikon D500: