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🔋 Power your Synology NAS like a pro — never miss a beat!
The TAIFU 4-Pin 12V 8.33A-9A Power Adapter is a robust, industry-standard replacement power supply tailored for Synology DiskStation 4-bay NAS models. It delivers reliable 12V DC power with up to 9A current, features essential safety protections (OVP, OCP, SCP), and supports a broad input voltage range (110-240V). Backed by a 3-year warranty, this adapter ensures your NAS stays online and secure, making it the go-to choice for professionals who demand uninterrupted network storage performance.



| ASIN | B07NCG1P8X |
| Amperage | 9 A |
| Best Sellers Rank | #283 in Computer Power Supplies |
| Brand | TAIFU |
| Built-In Media | 'Synology Power Supply', 'Instruction manual' |
| Color | black |
| Compatible Devices | Synology Disk Stations |
| Compatible Phone Models | Synology Disk Stations |
| Connectivity Technology | 4-Pin |
| Connector Type | Barrel Connector |
| Current | DC |
| Current Rating | 7 A, 7.5 A, 8 A, 9 A |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 3.9 out of 5 stars 442 Reviews |
| EU Spare Part Availability Duration | 3 years |
| Enclosure Material | Plastic |
| Frequency Range | 50 Hz - 60 Hz |
| Included Components | 'Synology Power Supply', 'Instruction manual' |
| Input Voltage | 240 volts |
| Item Weight | 0.5 kg |
| Main Power Connector Type | 4 Pin |
| Manufacturer | HKY |
| Mfr Part Number | A90C-120008330 |
| Model Number | A90C-120008330 |
| Mounting Type | Wall Mount |
| Number of Items | 1 |
| Output Current | 9 A |
| Output Voltage | 12 volts |
| Power Plug | No Plug |
| Power Source | Corded Electric |
| Special Feature | Short Circuit Protection |
| Special Features | Short Circuit Protection |
| Specification Met | REACH |
| UPC | 709445226494 |
| Unit Count | 1 Count |
| Wattage | 120 watts |
D**S
Power Supply failed almost exactly 3 years from purchase
Update: The seller very promptly offered to replace the power supply after submitting a warranty claim! Top marks for customer service!! Five stars for the CS team :) This power supply has been working great in my Synology DS918 since purchase 3 years ago. I received an abrupt message about unstable power supply within DSM and across all 4 drives. Upon rebooting, the system would not spin up the drives. Researching online, this is a problem when not having enough amperage to spin the drives up, Synology just sort of hangs because it cant boot the OS which are stored on the drives. I have never used a warranty for anything purchased off of Amazon, but I am reaching out to the seller to see if they will honor the 3-year warranty they claim. I will update this review upon hearing back from them.
S**S
Fixes the issue if its the power brick
had my synology ds918+ go offline while at a camp and when I came home, it was just off. my desktops were on, modem/router were on (both modem/router and nas are on a PSU, my one desktop that is not was still on, so not a power outage or it would be offline). Tried it on a different outlet, nothing. Pulled drives out, pulled extra ram out, nothing. Tested with multimeter and couldn't get any signal through it. one 2 of the prongs, the continuity test worked, but also noticed the green led light (didn't realize it had one) was off on the brick. Synology support said it was out of warrenty so no help there (not their issue really), so I decided to order one of these to rule that out. Came 2 days later, and when i plugged it in, green light on brick, hooked it into the nas and blue power light came on. Minute later, could connect to it. Not too bad of a fix cost after 4 years of non stop running. Might as well try that if you are getting the same thing with zero power coming, or your power brick is flickering.
T**R
Didn't last long.
I bought this product to power up my Synology DS415+ in Jul 2022. It worked flawlessly for 1,5 years and gave up on 31Dec2023. All my disks all of a sudden started giving errors and NAS would endlessly beep. After sometime troubleshooting when I powered my NAS up with a computer power supply and came right back up it was clear that this power supply was causing the issue. I wouldn't recommend this product.
T**S
Works with DS420+
About 4 years ago, in 2020, I bought a DS420+ to replace my aging 2-bay Synology NAS. One day, I found that it was powered off and I couldn't power it on. In my attempt to troubleshoot it, I decided to give a replacement power supply a shot. This power supply was able to power it on, indicating that the original Synology branded power supply had gone bad after 4 years of flawless operation. If you run into a similar situation where you need a replacement power supply for your Synology NAS, look no further. This appears to be a quality product that works just like the original Synology power supply.
R**T
Replacement Power Supply for DS418Play
Woke up one morning to my Diskstation being offline. It had been doing that lately about one a month but I couldn't figure out why, there were no logs and it was on a UPS. So, I went and hit the power button and it whirred up, lights came on, disks clicked and then - off again. I checked the plugs, made sure things were snug and hit the button again, this time it didn't even get as far as the previous time. The unit was six days out of warranty. My AMEX card gave a 1 year extended warranty but required an estimate to repair - Synology would not provide the estimate since they don't make that one anymore. My local PC repair shop wouldn't quote on it. So, out of luck. Searching around online I found a few things it could be. Replacing the power supply was the easiest (others required me to do some soldering on the board) but since it wasn't a sure thing I decided to go with this no-brand power supply. It did the trick and one year on it's still going strong. So if you have a DS418Play and it starts shutting down this might be the fix you're looking for.
G**Y
Works with Synology DS918+
Works with my Synology DS 918+. Not really much else to say. It's a power adapter
M**E
Lasted 5 years.
Lasted 5 years with my Synology DS916+... Not sure if that is good or bad. I have a DS916+ and a DS413j. I have gone through a lot of power supply bricks...
C**S
Right size for the Tv
It did what it supposed to do. Right size and fit the TV perfectly
N**K
Works with my Synology 918+
It's pricier than I'd like for a 3rd-party no-name sketchy power supply :). But it worked! My Synology power adapter conked out and this one has been working for several months now without a glitch. No funny noises, no complaints. I'm not an electrical engineer so I cannot vouch it's not doing some subtle damage through sketchy voltage or insufficient current or whatever, but... so far it works 👍🤞
V**V
Works great for a 918+
So far so good one month in, ordered Dec 2025.
J**R
Peu fiable et recommandable pour un NAS
Évitez cet article. Comme plusieurs utilisateurs, l'alimentation a lâché au bout de 3 ans chez moi. J'espère que je n'ai pas perdu mes données.
R**T
Solid replacement for DS918+ PSU
I got this as a replacement power supply for my DS918+ after the PSU started making clicking noises and couldn't boot the NAS. I plugged this in and it worked like a charm. Build quality is good.
S**R
It works, but it doesn't last and vendor won't honour warranty
The power supply lasted 2.5 years before failing to power my DS416play with 4 x 3TB WD drives. Confirmed failure by swapping in the PSU from another Synology NAS. Vendor did not respond to warranty requests from me directly, nor via Amazon escalated support. So be aware -- limited lifespan, no warranty. Giving it 3 stars since it did work as advertised, for a while.
Trustpilot
1 week ago
2 weeks ago