USB to expresscard 34mm / 54mm USB2.0 Adapter card usb for PC Laptop Computer with LED and DC Power - AliExpress
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Best Buy: Patriot Memory 2-Port USB 3.0 ExpressCard/34 Adapter PCUSB3EXP
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USB to ExpressCard Adapter (Reader/Card Drive for USB 2.0 ExpressCard34/54)
Sonnet Echo Pro ExpressCard/34 Thunderbolt Adapter ECHOPRO-E34
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USB for ExpressCard 34/54 Adapter Cable
2 Port SuperSpeed USB 3.0 (macOS Native) ExpressCard|34 Adapter – local338