Before plugging in my phone, lets run two commands on Twinkie to check the resistor value : > tw res rd rd > tw cc CC1 = 442 mV ; CC2 = 0 mV
The "tw res rd rd" command simulates a device by having Twinkie hook up to 5.1k pulldowns on both CC lines. "tw cc" reads the voltages back. CC1 has a value of 442mV. Referring to the USB Type-C Specification Table 4-25 Voltage on Sink CC pins, this voltage falls right in the middle of the range allowed for vRd-USB, meaning that yes, this cradle has the correct 56kΩ pullup resistor!
For another check, I also tested using the CheckR app while the dock was plugged into my PC, and it also passed (pic attached).
For charging performance, from the Anker PowerCore+ power supply, I was able to charge the Nexus 5X (with a state of charge at 25%) at just around 2.4A.
Here's the result of the current meter on twinkie : > tw vbus VBUS = 4748 mV ; -2497 mA
Also, running the Ampere app, I confirmed that 2320mA was charging into the battery at the same time.
Finally, as a test of USB 2.0 High Speed, I’ve hooked my Nexus 5X to my Chromebook Pixel via the NXET dock to test large file transfer via MTP. It just works, no problem!
For the mechanicals of this cradle : The cradle has an adjustable height Type-C connector that can be changed with a dial in the back. I found that this adjustment was important especially depending on the kind of case you have on your phone. With the SUPCASE one on my N5X, initially, I had the plug setting too shallow and not all of the pins were making contact in my phone. Luckily it is easy to adjust.
The cradle is weighted, but I feel like it should have more weight, or not as much resistance on the connector, as it's not possible to undock my phone with one hand; lifting it with one hand without touching the base causes the base to come up with the phone.
In conclusion, the NXET Omni dock is spec compliant and a good docking solution for your new Nexus phones or other Type-C phones. My two criticisms are : 1) needs more weight so I can more smoothly remove a phone without holding the dock down and 2) USB Type-C plug instead of Type-A on the other end so it can support true 5V 3A charging. But otherwise, I recommend.