You should buy an H270 board instead.
For example - https://www.newegg.com/Product/Product.aspx?Item=N82E16813157736&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-PCPartPicker,%20LLC-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=
It will save you the headache of worrying about updating the BIOS on the H170 motherboard to enable compatibility with the Kaby Lake CPU.