ROG STRIX Z590-F GAMING WIFI - MOTHERBOARDS

That slot is not NVMe natively, so you can't boot from that slot You have to mod the BIOS and insert a little NVMe support module and reflash, you can find

Find out more about card slots in Asus ROG Phone 6: devicesasus

rog 77 slot Asus ROG Strix B650-A Gaming WiFi, $280, 12, 60A, 0, 3, 1, 2, 0, 7, 6, 4 It has two slots, with the primary slot being PCIe compatible

rog slot Triple slots: 5G*+ 4G or 4G dual-SIM dual-standby support & one MicroSD card Slot 1: 2G3G4G5G Nano SIM Card Slot 2: 2G3G4G5G Nano SIM Card