Hello, it worked for me, no problems!
Regards
Cisco

Hello Mosraf
According to Synology Parts, the corresponding PSU for DS1812+ is End of Sales:

PSU 250W_1
Description: PSU 250W 24p+12p+8p
EAN: 4711174729210
UPC: 846504009213
Dimension: 15.5 x8.1 x4.1 cm
Weight: 0.82 kg
Remark: Available for DX513: S/N XXKUNXXXXX
Applied Models: RS812+, RS812, RS810+, RS411, RS409, DS1812+, DS1512+, DS1511+, DS1010+, RX410, DX513, DX510

I hope this information answers your question
Greetings
AC