Closer Look:

Here it is again, well protected within a cylindrical shape bubble wrap, molded according to its shape. Only a set of cable is unprotected.

And these were the two cables that were out of the bubble wrap. Like any other semi-modular PSU on the market, the 24pin ATX and 8pin EPS cables are soldered to the PSU.

As for modular design, we got about 6 ports here. Four of these ports are for SATA/PATA connections and the other two in red are for PCI-e connections.

The 24pin ATX and 8pin EPS cables are pretty long. You won’t have any problem reaching the 8pin EPS and 24pin ATX ports on your motherboard.

This is the side that’s most likely going to be visible on your PSU. They’ve made sure to include as much information here for the viewer. We have the wattage rating, 80+ Bronze, and other certifications along with some technical details mentioned here. We also seem to have some good Amphere ratings at the rails, with +12V rail topping at about 42A. That’s very capable of running a single high end GPU.


This is what the back of the PSU looks like. We have a switch here for direct power on/off. And to blow out the hot air from the PSU, we have a honeycomb design covering 1/3 of this area.

On the non-visible side of the PSU, we only have an Antec logo.

And at the bottom, you’ll find the 120mm double ball bearing fan. There’s an Antec sticker on the center with continuous power written across its edges. Also, there’s a warranty sticker on one of the screws preventing you from opening the PSU without voiding the warranty. Well, we shall see about that in a while.

As for the wires, we got a bunch of them. All of them has a net sleeve on them, hiding the red, black and yellow wires midway. Our Antec Neo Eco 550M came with a US Type B power cable. This may vary in your case. So I had to use a different power cable. As for other cable, we have 2x 6pin to 3 sata head cable, 2 8pin to 6+2pin PCIe cables, 1x 6pin to 3 molex head cable and 1x 6pin to 2 molex head and one floppy cable. Also, the PSU comes with 4 mounting screws.

Antec Neo Eco 550M 550Watt 80+ Bronze PSU
And yes, we did that. We just voided the warranty of a brand new Antec Neo Eco 550M PSU for the sake of this review. So, let’s see what we have here. To open up the PSU, you’ll need to unscrew the 4 screws on the fan side. And this is the site that you’ll get to witness. You cannot remove the top shroud completely without getting the fan cable-free by cutting the cable tie on the wires. Also, we don’t recommend opening your PSU for whatever reason unless you know what you’re doing. If you’re having any issue with your PSU, contact any repair shop or brand support.

And here’s a top view of the disassembled Antec Neo Eco 550M. The OEM for the Neo Eco series is Channel Wall Technology (CWT) and it uses the GPK platform. However, the newer Neo Eco series production OEM is being replaced by Andyson. I myself am not too experience to talk much about the details of what’s going on here, so let’s have a look at some closer look and solve this mystery together in the next few pictures.

So here, we have about 3 coils, and in between them is something I’m not familiar with.

We have two more coils near the set of wires.

Between the set of wires and the coils, we have a number of different size capacitors. Antec is using Japanese heavy-duty caps in this PSU to assure it’s stability.

Between the two heatsinks, we have what I believe are the transformers.

There’s an Antec logo present at the PCB.

Near the edge, we have a huge capacitor on one corner while a few smaller ones are also visible. The huge bigger capacitor in the picture is rated 240uF 420VDC 105C. There’s also a small heatsink over here, covering something. Not sure what the black thing is here in the middle.

The modular ports are soldered to a smaller PCB which then is connected to a primary PCB via wires.

Here are the wire soldering points. The PCB has ratings printed over them as not to be mistaken.

And here’s a closer look at the 120mm double ball bearing 7 blade fan by Yate Loon Electronics.