This is false when it comes to me to PCIe, as mentioned elsewhere in this thread.

Most motherboards have cutouts on one end of the PCIe x1/x4 slots, for exactly this situation. If not, and you want to be adventurous, you can cut the plastic of the slot and it’ll work fine.

If the card is PCIe 3.0 x4, and the slot is PCIe 4.0 x1, the card will run at PCIe 3.0 x1. But it’ll work.

I used Kagi for a few months but was turned off by the fact that they developed an entire production line for making tee shirts vs. spending more time on making their service better.

Their CEO also doesn’t understand personal boundaries (or privacy laws, if he truly believes everything he says in these emails): https://discuss.techlore.tech/t/kagi-ceo-s-recent-controversy/8119/2

I went back to DuckDuckGo.