Apevia ITX-PFC400W Mini ITX/Flex ATX / 1U 400W Fully Modular Power Supply, Full Range Active PFC 90-264V, AC for POS AIO System Desktop Gaming Server Small Form Factor (Flex ITX) Computer PSU

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.

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.

Built a NAS with it, used it for a month or two. It's running on a UPS, so I can see power usage, never above 90 watts. Yet this thing crapped out in the most annoying way: the system was operable, and my SSDs were fine, but HDDs would click/whir constantly and then eventually started throwing checksum errors. I swapped out drives thinking they were bad, but the new ones would do it too Swapped 3-4 drives and every cable with problems randomly cropping up until I finally swapped out the PSU with a cheap 300w I had sitting around, and suddenly all the old 'broken' hard drives are working brilliantly. I won't be using this brand again.

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.

Works like a champ in my mini pc. very low noise, fairly low heat. I would purchase again.