Spectral DMA-180S2 Fuses---2A or 4A on 220V?

Dear All,

I noticed on the rear board on DMA-180S2, showed" 4A 220V", but on the website of Spectral said 2A 220V? which one I can follow? many thanks.

Use the lower value just to be on the safe side. If it does not blow, you're fine. If it does time after time, go to 4A.
I would imagine both values are slow blow.
Detlof, many thanks!