Question about AsRock H110 Pro Btc+

Yes. Theoretically, it should be possible to use any 6th gen LGA 1151 processor, or 7th gen processors (after a bios update with a 6gen).
Here is the support list from ASRock itself: https://www.asrock.com/MB...

Yes i use it with a pentium

But the Pentium won't be worth it here. A mainboard costing 150 francs with a processor costing less than 100 francs doesn't really fit together. It's also ridiculous that you want 150 francs for an H110 mainboard. Here is the alternative: AsRock H110M-DVS R3.0, mATX, LGA1151 (LGA 1151, mATX) With this mainboard you don't have to update the BIOS to use a 7th generation Intel processor. It has everything you need and is well equipped.