SOC 4000 old fuse?

[Prosatanosz]

HI! There is a fuse found in old 286 laptop power supply, labelled SOC 4000. And the other is SOC 6300. It looks like a ceramic resistor. Maybe 4 and 6.3 amps? The place where I found it doesn't seem like such large currents flow. The printed circuit strips are also relatively thin. But at the end of the pwm circuit (they are at the beginning) 5,12 and 26v appear. They may need that much power.

[R_J]

SOC 4000 (4000ma) = 4 amp, SOC 6300 (6300ma) = 6.3 amp

[Prosatanosz]

Yes this is! Thank You!