Unfortunately a capacitor got knocked off from a mainboard. The mainboard is an AsRock Z370 Extreme4 (see here).
The capacitor is labelled as:
FP12K 79AJ 271 16
I want to replace it, but I am not sure what capacitor would be equivalent. What I found out is that it must be a "Nichicon 12K Black Cap". I think the "16" means 16 Volt, but I don't know what "79AJ" and "271" means.