ASUS Prime Z270-A also has 2 M.2 slots, which can be used via adapter

https://www.aliexpress.com/item/Consumer-Electronics-Shop-Free-shipping-PCI-E-4X-Female-to-NGFF-M-2-M-Male-Adapter/32603828958.html?spm=2114.13010608.0.0.mF6RTm

i will receive the adapter in 2 weeks or smth and will try it out on the board.

or did any1 try those already?

imao there are very less Z97 and Z87 mining suitable boards left in the place i live and they are hard to get. TB25 is not available in Europe anyway.

So the only way to go is with Z270 chipset boards or take Z170 and have pain in the a... with installing and making them run properly. i am also tending towards Z270 boards for their resale value. yes, they are expensive, but they will still have a good value in 2 years.

can actually Z270 do more lanes as H270 chipset? mkay Z270 has 4 more lanes (total of 24)