XPS 730x, MCB 10pin power cable, another way of making it

there are quite a few ways to make a custom 10 pin power cable

I did some original research on the 10 pin

I have a dead old Dell dimension psu that has a the original 20 pin ATX, this can be cut off inside psu to have as much cable length as possible

the left 10 pin of the 20 pin ATX connector has identical bevel to Dell 10 pin 

there is just enough room next to the 10 pin power socket of MCB to stick the 20 pin connector in it, the right half outside socket

I then connected the cut end of 10 cable to ten paper clip pins and test the original Dell 10 cable.

Result:

There are 3 x 12V pins.  My research aims at whether all three are all needed to drive the LED and fans.

result:

pin#1 12V pin can be skipped

by connecting the rest of 9 pins, all LED lit and fan works connecting to all three fan header

Great.  my speculation is that pin#1 was designed for H2C liquid pump and Peltier plate.  It is not necessary to wire pin 1 for the LED and fans

this entails I can use two 15 pin male sata power connectors to obtain 2x12V, 2x5V, 1X3.3V, and 4x Gnd to make a simple custom 10-1 pin power cable

it cost < 10 USD.  cut the cable and connect the cut end to the 20 pin ATX connector from a dead old ATX psu.

connect the male sata power to two sata power connectors of new psu

research pic to follow