Hello, I am trying to relocate a USB 3.1 type B receptacle from the front of a rack mount hub to the back so I dont have to look at the uplink cable. This has gotten a little more difficult than I expected... I need some help with a few questions, I am sorry for the complex post, trying to be complete and clear.
The plan was just put a port on the back and wire it up. I ended up getting the mechanical part done with a dremel and a keystone wall plate i bought on amazon which i took apart and used as a routing jig (came out perfect, kinda proud of that mod!). Then I attached one of these keystone adapters to fit inside of the unit:
https://www.amazon.com/gp/product/B00BS2YFVO/The keystone wall adapter unit has USB 3.1 type B on both ends, I am assuming it is straight wired before I remove the original USB 3 receptacle from the hub's PCB I stripped a cable on the end I was going to use to solder to the board and plugged in the USB type B end to the original receptacle, then used my multimeter to check continuity on the pins on the bottom of the board to see which ones hooked up to what. I wrote this down.
Now, solder this together has gotten to be pretty hard, its tiny in there, but I want to get some questions squared away before I go any further because I am confused about a few things regarding the pinout.
Assumption: The type B receptacle looks just like this one from mouser and I am assuming that the 9 pin through hole configuration is the same for other receptacles? Is this a bad assumption (see question 1)?
https://www.mouser.com/datasheet/2/215/950-742485.pdfAssumption: I am also using this for the pinout meanings, type B pinout and assuming USB 3.0 is the same pinout as 3.1
(NOTE: the Keystone type B receptacle whose datasheet I am referring to for the PCB pinout is a _different_ part from the keystone wall adapter I used for the back port on my mod, I will try to say "keystone wall adapter" if Im referring to that object which I bought on Amazon, otherwise Im referring to the keystone PCB mounted receptacle from mouser which I am only referring to the datasheet for pinout physical layout)
Q 1: When I did my continuity test the pinout I got does not match the one in the keystone pcb receptacle's pinout layout (see datasheet under "RECEPTACLE FOOTPRINT"). Pins 5 and 6 were swapped and so were pins 8 and 9. Could that be due to a difference in the way the pcb receptacle is pinned or are all these receptacles using the a standard pinout? Otherwise I am wondering if it has something to do with twisted pairs, are they swapped on the receiving end? I am pretty sure I did not measure the continuity wrong four times. Trying to avoid having to solder these tiny .7mm holes twice.
Q2. When I did my continuity test, pin 7 (per the keystone receptacle datasheet physical layout) was connected to BLK, the same wire as connected to pin 4. I am not if this is right since this diagram calls the "color" of this pin "ground". Does anyone know what this diagram might mean by "ground" color? Is it safe to just hotwire it to BLK?
Q3: The USB 3.1 cable I have for the inside of the unit (from rear type B keystone *wall adapter* to the PCB board where I removed the type B pcb receptable) has a lot of silver wire around the inner wire components. Usually when I see complex high throughput cables (e.g. cat
like this I do nothing with this outer wire. By any chance should I do something with this part of the wire?