ExpressCard 34 mm Express Card Adaptor to 54 mm PC Card Reader PCMCIA Adapter - AliExpress
Expresscard/34 port not working after macOS High Sierra update | MacRumors Forums
Testing a cheap ExpressCard to NVMe SSD adapter on my ThinkPad T430 :: ./techtipsy — Ramblings of a tech enthusiast.
Best Buy: Patriot Memory 2-Port USB 3.0 ExpressCard/34 Adapter PCUSB3EXP
Amazon.com: StarTech.com 1 Port Flush Mount ExpressCard SuperSpeed USB 3.0 Card Adapter with UASP Support - ExpressCard USB 3.0 Adapter (ECUSB3S11), Green : Electronics
Amazon.com: 2 Port USB 3.0 to Express Card ExpressCard 34mm Adapter Hidden for Laptop : Electronics