StarTech.com 1 Port Flush Mount ExpressCard SuperSpeed USB 3.0 Card Adapter with UASP Support - 5Gbps - Add a USB 3.0 port connection that inserts flush into a laptop ExpressCard slot -
Solved: Do I have an ExpressCard slot or smart card reader? - HP Support Community - 7138035
Use P2 (i.e. PC cards) on your ExpressCard-based laptop. – I E B A Tech Thoughts
StarTech.com 2 Port ExpressCard Laptop USB 2.0 Adapter Card - USB adapter - ExpressCard - USB, Hi-Speed USB - 2 ports - Add two USB 2.0 ports to a computer through an ExpressCard slot - Filo CleanTech
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
This laptop's ExpressCard slot comes with a ruler, diameter measurement and letter opener multi-utility : r/mildlyinteresting