This laptop's ExpressCard slot comes with a ruler, diameter measurement and letter opener multi-utility : r/mildlyinteresting
Express Card 34 To Sdxc Sdhc,Sd Card Adapter For Laptop Compatible With Expresscard 54mm Slot - Buy Express Card To Sd Card,Sd Card Adapter 34mm Express Card,Express Card Sd Product on Alibaba.com
PCMCIA, PC Card, CardBus and ExpressCard Comparison
StarTech.com 1 Port Flush Mount ExpressCard SuperSpeed USB 3.0 Card Adapter with UASP Support - Add a USB 3.0 port connection that inserts flush into a laptop ExpressCard slot - slim usb
Amazon.com: StarTech.com 2 Port Flush Mount ExpressCard 54mm SuperSpeed USB 3.0 Card Adapter with UASP - Dual Port Laptop ExpressCard USB 3 Controller (ECUSB3S254F) : Electronics
PCI e riser card dock laptop to express card 34 mm riser pci e 2 Card ADP09933|express card 34|express laptopriser card pci-e - AliExpress
Amazon.com: Xiwai ExpressCard 34mm to PCMCIA PC CardBus Card Reader Adapter USB for Laptop : Electronics