

⚡ Power meets precision in a compact form — your small build’s secret weapon!
The Apevia ITX-PFC400W is a fully modular 400W power supply designed for Mini-ITX and Flex ATX small form factor systems. It features full range active PFC for worldwide voltage compatibility, a quiet 40mm double ball bearing fan for efficient cooling, and comprehensive multi-protection safeguards. Ideal for compact gaming rigs, POS systems, and servers, it delivers reliable, clean power with flexible cable management to keep your build sleek and efficient.




















| ASIN | B0CWN49V13 |
| Best Sellers Rank | #62 in Computer Power Supplies |
| Brand | Apevia |
| Customer Reviews | 4.0 4.0 out of 5 stars (103) |
| Date First Available | March 1, 2024 |
| Item Dimensions LxWxH | 6.3 x 2.9 x 1.4 inches |
| Item Weight | 2.23 pounds |
| Item model number | ITX-PFC400W |
| Manufacturer | Apevia Corp |
| Product Dimensions | 6.3 x 2.9 x 1.4 inches |
| Series | ITX-PFC400W |
J**K
The Teton (outdoor gear) of small form factor psu's
I really liked my 350-watt PSU (I have two of them in my backup NAS systems for RAID arrays running on the main NAS), but I think I overloaded one and burned it out. Technically, it still works, but it smells awful, so I contacted support. Their response was amazing—they sent me a new one right away. The support from this company is top-notch, and their products are affordable while performing their job well. Since I likely overloaded my 350-watt unit, I decided to upgrade to the 400-watt model to better handle my OpenMediaVault NAS server. My setup includes: - **CPU**: Intel i7-4770 - **RAM**: 16GB - **Networking**: 10Gb SFP+ NIC - **Storage**: 8× 12TB HDDs + 2× 220GB SSDs - **Cooling**: Noctua fans for both the case and CPU - **Motherboard**: A random Shenzhen Machinist board for Intel 1150 socket Since switching to the 400-watt PSU, it has been flawless. It hit the ground running and has powered my system 24/7 without a single issue. I run RAID arrays, virtual machines, and containers, and it's always connected to a UPS. I highly recommend this company and their products—I’d consider them the **Teton** of small-form-factor PSUs. Apevia did a great job with this product, and their support is outstanding. I especially love the **modular design**, which keeps my NAS’s internal cabling much cleaner. The PSU fan is **quiet**—I don’t even hear it. My Noctua fans (2× 80mm for the case and 1× 90mm for the CPU) are louder. Honestly, I wouldn’t bother replacing the PSU fan despite what some content creators suggest—the gains are almost nonexistent. If you’re considering this PSU, **go for it!** It’s an excellent value, and the company stands behind their products.
B**A
Reliable
Bought 2 and used for a year+ with no issues
C**N
Have had 2 of these, both failed early for no apparent reason.
I had something like an Apevia 250W PSU for a project a while ago that I left sitting for about a year (off, unplugged) and when I turned it on it delivered *some* power but I found almost every pin on the 24 connector was reading 0V. I figured it was a fluke, and this one has good reviews, so I picked up this 400W to replace it. It worked for about a month until I unplugged it and moved my computer. When I plugged it back in, I saw some spark internally and it no longer turned on.
C**R
Inexpensive Modular Power Supply
I have always wanted to use a modular in my builds to reduce clutter but most are very expensive. This one fits the bill very well.
R**B
Fantastic product.
Super compact. Fits perfectly in a dell optiplex 7050 sff. Included tons of cords, follow the directions when hooking it up. The PSU fan is very very quiet even under load. A separate 24pin to 6pin dell power adapted was needed to power up the 7050 motherboard. Highly recommend.
J**0
Works great on my Mini-ITX systems
I've had a few Apevia PSU's in the past in the budget sector, this one kind of falls into that sector when it comes to Mini-ITX power supplies. I would say that so far my biggest gripe on these Power supplies is the lack of a Power Switch on the PSU itself. Meaning that I have to unplug the PSU if I want it to not be powered. The power supplies have so far worked well on 24/7 workloads at around 30% load. The fans don't scream and the units don't get too hot. The fact that these are modular at this price point is really great. I would hope that they continue to provide these power supplies as I Plan to build more systems with these units.
R**J
It works, but I wouldn't rely on it...
Pros -Quiet -Decent modular connectivity -Cheap -Cable length Cons -Not 80 plus certified -Tight fit in small ITX cases -Can't handle really low loads -Cheap Bought this to power a Minisforum BD795i SE and live inside a 3.8L case. The size complaint would be my use case, however this unit kept resetting on me because that motherboard setup uses maybe 1 watt at idle. Ended up going with a higher tier brand PSU that is 80+ Gold certified... Tested it out on a 11400+2060 setup and it pushed 300 watts no problems. Fan is pretty quiet close to full load too. I'll keep this PSU around for "test" purposes, but you get what you pay for.
L**.
good for 300w+
stable up to about 300 watts. haven't pushed it further than that. pulled 340 from the wall on a system running rtx 3050 @120watts and a 12600k at 140 watts
M**D
I used this in a media-centre PC and it's efficient and quiet. I did initially have a problem with one of the power cables but I contacted support and they sent me a new cable within 1 week.
R**D
Have been using for almost a year now without issue. Would recommend.
Trustpilot
1 month ago
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