Hello, I was also looking for a longer cord for the customer display and found this(see pic below) and placed an order today. So if you didn’t find anything yet, goahead and order this! It’s FREE!! I also placed an order a male to female micro usb extension from amazon to make it even longer. Well anyway, good luck to you!
Would the Right angle 90° little adapters work on a straight cable?
Like would this adapter work with an extension?
Note that the register cable uses 5 conductors compared to the 4 normally used by Micro-B USB cables, so just getting a normal USB extension cable might not work even if you get the ends right.
I was able to make a 10' cable to go between the Square register and customer terminal by splicing a segment of CAT5 ethernet cable between the two ends of an existing square register cable.
You will need to do some fiddly soldering, but otherwise the job is straightforward. Cut the Square cable in half, peel back the shielding, separate out and strip all the wires, try to isolate the metal conductors from the stress relief fiber that is also inside each wire, similarly prepare two ends of the best ethernet cable you can find, solder everything up with heat shrink or something else suitable for insulation.
It does not matter which colors you use in the ethernet cable as long as you are consistent. It is probably a good idea to connect the Square green and white to the same pair in the ethernet cable (I used green and green/white) since these are likely the data wires.
Also note that the red and black wires in the Square cable seem to be a little thicker than the others so likely are carrying power to the terminal. With this in mind, I connected each to a pair of ethernet conductors to lower the voltage drop along the loner cable. (I ran out of clear heat shrink on one end, so that is why this other end has green tubing)
I did not use shielded ethernet because I did not have any, but if you are planning ahead it would probably be better. Try to make the shielding as seamless as possible along the full length of the new extended cable by overlapping the shields at each joint. That said, my 10' seems to work fine with no shielding at all, but there might be problems if you have electrical noise near the wire from motors, radio transmitters, etc.
Hopefully Square will use a more standard cable type (USB-C male-to-male would be nice) on the next iteration, but in the meantime this is a solution that does work, albeit with a significant investment of time (took me a little under an hour).
