The Davuaz Da-K6402W is another low-cost, fanless switch pushing 2.5GbE networking to new affordability brackets. This new 4-port 2.5GbE and 2-port SFP+ 10GbE switch we purchased on Amazon for $69 and decided to give it a try. If you saw our earlier review of the YuanLey YS25-0402 this is essentially the same switch, but we tore it apart and found a few small differences.
Davuaz Da-K6402W Overview
We featured this video in our September 2023 mini-round-up of fanless 2.5GbE switches that you can find here:
We have also added this switch to the Ultimate Cheap Fanless 2.5GbE Switch Buyer’s Guide where we have now listed 32 models and we already have 5 more switches tested, but not on that list. Bookmark that page to get the latest, we will like all of these reviews from that page.
Davuaz Da-K6402W Hardware Overview
On the front of the switch, one can see four 2.5GbE ports and two SFP+ ports along with a snazzy blue Davuas faceplate.
![Davuaz Da K6402W Front](https://www.servethehome.com/wp-content/uploads/2023/09/Davuaz-Da-K6402W-Front.jpg)
We get four 2.5GbE ports that can also run at 1GbE and 10/100 speeds.
![Davuaz Da K6402W Angle 1](https://www.servethehome.com/wp-content/uploads/2023/09/Davuaz-Da-K6402W-Angle-1.jpg)
There are two SFP+ ports for higher-speed devices. If you have a primary workstation, a NAS, or even just an uplink, these ports are handy.
![Davuaz Da K6402W Front Angle](https://www.servethehome.com/wp-content/uploads/2023/09/Davuaz-Da-K6402W-Front-Angle.jpg)
The switch itself is not much deeper than a SFP+ cage inside the switch as we can see from this side view. We also get the same green QC sticker as the YuanLey.
![Davuaz Da K6402W Side 1](https://www.servethehome.com/wp-content/uploads/2023/09/Davuaz-Da-K6402W-Side-1.jpg)
Here is the other side of the switch. This is a very small footprint switch that can be Velcro mounted just about anywhere.
![Davuaz Da K6402W Side 2](https://www.servethehome.com/wp-content/uploads/2023/09/Davuaz-Da-K6402W-Side-2.jpg)
The rear has a DC power input and a grounding point.
![Davuaz Da K6402W Rear](https://www.servethehome.com/wp-content/uploads/2023/09/Davuaz-Da-K6402W-Rear.jpg)
On the bottom, we get a label. We also get mounting holes so one can use two screws to mount the switch to a desk, wall, or elsewhere. Unlike YuanLey, Davuaz does not even try to print some, likely fake, regulatory markings. Instead, we just get a model number, serial number, and the fact it is a 12V DC-in device.
![Davuaz Da K6402W Bottom](https://www.servethehome.com/wp-content/uploads/2023/09/Davuaz-Da-K6402W-bottom.jpg)
Inside the switch, we can see the ports and a relatively simple design. Something that was different compared to the YuanLey is that this switch did not have a thermal pad between the bottom of the PCB under the switch ASIC and the bottom of the chassis.
![Davuaz Da K6402W Open Port View](https://www.servethehome.com/wp-content/uploads/2023/09/Davuaz-Da-K6402W-Open-Port-View.jpg)
Here is the YuanLey where one can clearly see this pad.
![YuanLey YS25 0402 Internal 2](https://www.servethehome.com/wp-content/uploads/2023/09/YuanLey-YS25-0402-Internal-2.jpg)
Here is the internal overview which again mirrors the YuanLey.
![Davuaz Da K6402W Internal](https://www.servethehome.com/wp-content/uploads/2023/09/Davuaz-Da-K6402W-Internal.jpg)
We can see the switch chip with a glued heatsink and then a very packed switch board.
Next, let us get to performance and power consumption.
FYI on the power supply markings, the ETL | Intertek is equivalent to having a UL certification.
How about some reviews of SFP+ adapters?
They really ADD to the cost of a system, yet no mention!
Just use DACs