works for:
https://www.amazon.de/AZ-Delivery-Step-down-Buck-Converter-3-stelliger-Digitalanzeige/dp/B08T158WPS/ref=sxin_14_pa_sp_search_thematic_sspa?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&crid=UW67H5ZOELA&cv_ct_cx=step%2Bdown&keywords=step%2Bdown&pd_rd_i=B08T158WPS&pd_rd_r=40e17307-9f50-404f-a73e-b147f1a1328b&pd_rd_w=CZOAK&pd_rd_wg=cDBLu&pf_rd_p=369e0550-22ca-47f3-afd0-8e8eaff6610c&pf_rd_r=MAFZD2H6GGM0JJQJWBDC&qid=1650038970&sprefix=step%2Bdown%2Caps%2C134&sr=1-3-029af771-c426-4118-8607-50ab08a20026-spons&smid=A1X7QLRQH87QA3&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEzRllPSDFRVEtaQVJVJmVuY3J5cHRlZElkPUEwNzgwMzI4MTFQNlk0V1k3NExYNSZlbmNyeXB0ZWRBZElkPUEwMDY3OTMxMTEzRFlNNTdVNjUyUCZ3aWRnZXROYW1lPXNwX3NlYXJjaF90aGVtYXRpYyZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU&th=1

It is designed for an Step-Down modul, to reduce the voltage from 24V to 12V or below, to run an Fan inside the Powersupply of an Elegoo Neptune 2.

Neptune 2

No

No

50