For my first test, I've got the Ventev cable plugged into an Apple proprietary Type-A charger. I got a comment in one of my previous reviews that I should be testing with a 2.4A capable power supply to demonstrate that the cable is of good enough quality to sustain 2.4A charging, so for this review, I am using one of Apple's 1st party power adapters with a 5.2V, 2.4A charging capability, specifically Apple's 12W iPad charger.
The Type-C end is plugged into Twinkie, acting as a pass through to Chromebook Pixel 2015. Picture attached!
Running the ectool command on Pixel: localhost ~ # ectool --dev 1 usbpdpower Port 0: SNK Charger Proprietary 4713mV / 2400mA, max 5000mV / 2400mA / 12000mW Port 1: SRC
So far so good. Pixel identifies the charger as an Apple Proprietary type adapter, and has negotiated 2.4A of charging.
Let's see what Twinkie says : > tw cc CC1 = 431 mV ; CC2 = 7 mV
The tw cc command reads the current voltage values from the CC pins. As you can see here, CC1 pin has a value of 431mV. 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 cable has the correct 56kΩ pullup resistor!
One more command : > tw vbus VBUS = 4823 mV ; -2440 mA
The tw vbus command uses twinkie's current and voltage meter ability. As you can see, the laptop is pulling just around 2.4A of current at 4.823V from the Apple adapter.
For a data test, I’ve hooked my Nexus 5X to my Chromebook Pixel via the Ventev cable to test large file transfer via MTP. It just works, no problem!
For more subjective aspects of this cable, this cable stands out with its distinctive flat tangle-free cable design. The cross section of this cable is a rectangle instead of a circle. Furthermore, the Type-C plug on this cable is also made using the deep-draw extrusion method much like the Apple and Google plugs, meaning the connector is stronger and doesn't have a visible seam on one side of the plug. The tip is also nicely rounded off so the edge of the plug isn't sharp. Overall, a very nice set of aesthetic choices by Ventev.
In conclusion : A high quality charging and data sync cable from Ventev. The cable is a great safe way to charge and data sync your new USB Type-C devices such as Nexus 6P/5X or Pixel devices. It is also future proof for fast charging USB Type-C devices to come!