BestParts New 250W Power Supply Compatible with Synology DS1815+ DS1813+ DS1515+ DS1513+ DS1512+ DS1511+ DS1010+ RS814 +RS815 DS2015xs QNAP TS531 DPS-250AB-44B

Was a simple swap out for the 1815+

Fits the DS815+ as a direct drop in and got me running again. Power supply fan started screaming after 14 months, so i had to replace it again .. this time with a different supplier.

My DS1010+ died suddenly. After some poking around, I thought it might be the power supply so I ordered this one. I was particularly pleased that it offered return privileges, since I wasn't 100% sure it was the power supply. This product came 1 day(!) after placing the order. It fit perfectly and, after hooking everything up, the server is back and fully operational! One caveat: unlike the OEM power supply, this one has a 115/230 volt power switch. It comes set for 230 so if you need 115, make sure to change the switch. Took me a while to figure that out :( Good job, BestParts! EDIT: PS failed on 6 February 2023 with failing 12 volt supply, even with no HDD's installed. Vendor contacted. Will update with results. EDIT2: Replacement received and working fine 4 days after vendor was notified. Excellent support! EDIT3: After this unit failed again, I purchased a second one on 13 January 2024. It failed today, 20 December 2024! Since the item appears to have a less than 1 year life, I don't believe this product is sufficiently reliable to used in a NAS!

So First off as the seller indicates if you have a DS1515 or DS1815 that will not power on and you have not repaired the motherboard this will likely not fix it. Now if your like me and you have a DS1815, you've applied the atom bug fix and replaced the transistor, then you might have a bad power supply. The good news? This power supply has the right plugs and works (with some modification). Now for the bad news. The power supply is slightly wider than the oem, which means you will likely need to ben the locating tabs slightly in your Synology to get it to fit. That's bad but not that big of a deal. The bigger issue is that the cables exit the power supply in a different location than the OEM. This means that the 24 pin cord is to short to reach the motherboard. Now if you willing you can cut the zip tie, widen the power supply hole and create enough length to make the connection. Its a bit of work but it is possible, frustratingly it shouldn't be necessary, but it is. Aside from that the only other notable thing is that the receptacle you plug the power cord into feels incredibly cheap, it wiggles around and the prongs are narrower than OEM. I'd recommend not frequently unopluging and plugging in. All that being said, with a little work it does function as a replacement for your Synology nas. At $75 its less than Synology wants at $120. The main driver for me was prime overnight delivery, allowing my nas to be up and running the next day. I'll update in a few weeks if anything changes.

This matched the OEM unit out of my DS1515+

The shipped power supply is VERSION 4, it is not the right 24pin motherboard connector for a Synology DS 1815+ (ver 5 powersupply) , I assume its a ATX spec like 2.01 or 2.02 or something of the like. In addition the length of the cables are just a hair short for a large NAS (Synology DS 1815+). After rewiring the old connector to the new power supply (1+ hour), the NAS is working.

Seems well made and it fits the DS1815+ just fine.

My original Synology power supply starting going out after nearly 8 years of service (and 2 house moves) but fan was quiet, just random reboots. I installed this power supply and fixed the rebooting issue, but now the fan is super noisy only after about 2 months. Guess I'll spend the extra $20 and go with one directly from Synology.