https://wccftech.com/kosin-showcases-an-rtx-3090-graphics-card-running-on-m-2-slot/

Kosin, a Chinese child company of Lenovo, has shown an incredibly unique way to connect the RTX 3090 graphics card to a laptop. Various products allow laptop gamers to connect an external graphics card, but these products usually require a Thunderbolt 3 or USB Type-C connection. This video shows an RTX 3090 connected through a Laptop's M.2 Slot. This video is available through PC Watch.

Kosin decides to utilize this modification on one of their laptops, the laptop utilized in this unique setup is the Air 14. This laptop utilizes the Ryzen 4600U processor, which also features an M.2 slot. This video showcases how Kosin modified this laptop to connect the RTX 3090 for data transfer and power the RTX 3090 using the laptop's power supply.