four inductors with ferromagnetic core on circuit board of computer mainboard

16x9 black board capacitor chip choke circuit closeup coil coils component computer copper core detail device disassembled dismantled electric electrical electromagnetic electronic electronics electrotechnical electrotechnology engineering ferrite field hardware inductance induction inductor inductors industry integrated inverter magnetic main mainboard micro microchip mosfet mount nobody nopeople orange part pcb power repair resistor ring science service shop smt socket soldered spare store supply surface switched tech technical technology toroid transformer transistor white winding wire yellow