Can you put a mini PCIE into a PCIE slot?

Can you put a mini PCIE into a PCIE slot? mini pc pcie slot CWWK Magic Computer is a fanless mini PC offered with an up to Intel Core i3-N305 Alder Lake-N processor and a PCIe x8 slot for expansion mining slot game In ASUS 「PCIe x16 Slots - 4」 - Motherboards Components , you could Mini-ITX Mini-DTX Thin Mini-ITX Networking 10G Ethernet 5G

mining slot game 1x PCIe x16 slot x8 LAN: 2x 10Gbps SFP+; 2x RJ45 Size: 196×189×48mm

mini slot machine keychain ASRock's DeskMate X600 Mini-PC lineup targets several users and comes with external GPU options with dedicated PCIe slots  I'm not 100% sure but if I remember correctly mini PCIe used in laptops for WiFi or similar has different pinout then PCIe slots on desktop