HP Elitebook 840 G9 how to replace the smart card reader Board

How to Use the Built-In Card Reader on an HP Laptop hp elitebook sc slot ISO 7816 Class A and AB Smart Cards; T=0 and T=1 Protocols; Speed up to 344,105 bps Show More The Express Card Smart Card Reader by HP is a slot-mounted card hp slot So I'm shopping around and I land at a HP laptop An HP Elitebook 1040 G3 The seller on ebay doesn't even mention anything about the SC slot

hp sc slot 50657 - HP NB HP ELITEBOOK 840 G11 970V6ET Ultra 5-125H 14 16GB SSD512GB Finger Print SC Reader Wolf Sec W11P*Garanzia 2 anni OnSite NBD*