Sonnet Echo Pro Thunderbolt to Expresscard 34 Adapter - Rule Boston Camera
Amazon.com: CFexpress Type B,USB 3.2 Gen 2 Cfexpress Type B and SD UHS-II Reader,SD 4.0 Card Reader 10 Gbps CF Express Card Adapter with Thunderbolt 3 Portable CFexpress Reader for Android/Windows/Mac OS/Linux :
Sonnet's Echo brings ExpressCard to Thunderbolt machines | Engadget
Sonnet Echo ExpressCard Pro Thunderbolt Adapter - Vintage King
Sonnet Echo ExpressCard Pro Thunderbolt Adapter - Vintage King
Sonnet adds an ExpressCard/34 slot to Thunderbolt Macs