Rtc on rock pi 3c plus and the boot by nvme

Hi. I Saw two images of the rock pi 4c plus. One has a two pins to rtc above the Board and other not. Do The rock pi 4c plus have pins to rtc? I need than but i buyed and i don’t know. I didn’t receive My board yet. The manual of install the system of nvme to rock pi 4c plus is the same of others rock pi? Can boot a preload on microsd and Go to nvme?