The issue

80mm fans were used mostly in PC applications, however they’ve found their way into other applications as well:
As handheld/desk fans, to support one’s heating system or cool notebooks, tablets and phones during long and intensive usage sessions.

Their basic design hasn’t changed in decades which also includes the way they’re wired up for power. If using a single fan only, this may be fine.
However, arraying them together side-by-side is very common and usually necessitates up to multiple Y-cables, cluttering up the area, collecting dust and turning cable management into a challenge.

The concept

For larger fans – 120mm ones, likely others – some brands offer a wireless fan solution.
Leads and contacts are moulded into the fan housing and allow fans to be arrayed using only one wire to power.  
Thus it’s necessary to find a distinctively different solution from other brands.

The overall dimensions of the fans in question is essentially standardized, however there are many possible geometrical differences that influence performance characteristics.
The solution would have to be deployable on as many variants as possible with no to minimal prior adjustment.

Doing a modification to existing fans meant there would have to be a “tack-on” solution. 
Existing cables had to be cut anyway but altering the housing was out of the question. 
The space available on fans is limited and non standardized, requiring a degree of flexibility that shouldn’t impact fitment. 

In the first version, a focus was on universal connectivity in order to achieve greater acceptance and compatibility anjd interchangeability with the market without upsetting a decades-old system.

The possibility of bidirectionally connecting the fans to power makes sure that the – much reduced – wiring can be kept as short as possible.

Electronic joining is done by either crimping or soldering.
The design is specifically intended to give ample space for excess wiring in order to allow performing the modification reliably and comfortably even for beginners.
Glue and a few minutes of time ensure secure and permanent joining of the assembly.

Due to the inherent properties of the standard connectors, it’s necessary to connect arrayed fans in sequence. 
This was done to ensure universal compatibility with standard connectors.

If greater flexibility and lower footprint are required, the Unifan VB can be used.
However, this model is not compatible for connections to other designs.