Amazon.com: JMT 3 Ports Hidden Inside USB 3.0 to Expresscard 54mm USB3.0 Adapter Converter for Express Card Laptop Notebook PC : Electronics
Finally got the cheapest USB 3.0 Express Card for my T420 😁 : r/thinkpad
Expresscard 54
Expresscard Adapter 34 54 Mm Expresscard To Mini Pci-e Adapter Mini Pci Express Express Card Converter For Laptop - Add On Cards & Controller Panels - AliExpress
Wholesale Express Card Expresscard 54MM to 2 eSATA Ports for Laptop Notebook From m.alibaba.com
expresscard 54 - Newegg.com
HP ExpressCard 54 Memory Card Reader 458899-001 1GB | eBay
Flush Mount ExpressCard 54mm USB 3 Card - USB 3.0 Cards | StarTech.com
Imperx VCE-HDEX01 HD-SDI Express Card 54 Video Capture Card