Yes, it must fit the slot with proprietary connector.
Anyway, I found a replacement at the manufacturer website, thanks.

Hello All;

My name is Erick, I'm new to mining and decided to try with a Black Arrow Prosperus X1.5 for now to test the waters.
The issue with this equipment is that it uses a unique Power Supply - Sunshine AP187, which is nowhere to be found. Perhaps I'm being over cautious, but I'm having a hard time locating a replacement. Can anyone give me a lead as to where / how I could find one? I tried Ebay, and nothing turned up.

Thanks, looking forward to this forum,

Erick.