[HTC 10 Questions & Answers] Andyw2100:
I purchased the Select Series USB 3.0 C to USB A, in 3 foot and 6 foot lengths:

http://www.monoprice.com/product?p_id=13012

http://www.monoprice.com/product?p_id=13011

Also available in 1.5 foot length:

http://www.monoprice.com/product?p_id=13004

Following is Benson Leung's review of that cable, in which he says it "Easily rated for 2.4 Amp charging and that it should be "future proof." (I have bolded those parts.)

I hope I purchased the correct cables (USB 3.0 C vs USB 2.0 C) and that they will work well.

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Monoprice Select Series USB 3.0 C to USB A Cable is Excellent and spec compliant!

Benson Leung, Mountain View, CA 1/30/2016 10:45:13 PM

Pros: * USB Type-C Spec compliant 56 kO pullup resistor for safe charging

* Easily rated for 2.4A of charging

* Very nice Deep-Draw Extrusion Type-C plug.

Cons: None

Benson here again, continuing my reviews of USB Type-C legacy cables, adapters, and accessories. Today I am reviewing Monoprice Select Series USB 3.0 C to USB A Cable, 1.5ft

Let's check spec compliance :

I'm using my trusty Chromebook Pixel 2015 with the Chromium Twinkie USB-PD Sniffer, available from Plugable.

For my first test, I've got the Monoprice cable plugged into an Apple proprietary Type-A charger, 12W version.

The Type-C end is plugged into Twinkie, acting as a pass through to Chromebook Pixel 2015.

Let's run this ec tool command on Pixel :

localhost ~ ectool dev 1 usbpdpower

Port 0: SNK Charger Proprietary 4895mV / 2400mA, max 5000mV / 2400mA / 12000mW

Port 1: SRC

So far so good. Pixel identifies the charger as a Proprietary type adapter, and has negotiated 2.4A of charging.

Let's see what Twinkie says :

tw cc

CC1 = 443 mV CC2 = 0 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 443mV. 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 56kO pullup resistor!

One more command :

tw vbus

VBUS = 4986 mV -2441 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 4.986V from the Apple adapter.

For a data test, I’ve hooked my Nexus 5X to my Chromebook Pixel via the Monoprice cable to test large file transfer via MTP. It just works, no problem!

For a USB 3.1 SuperSpeed data test, I've hooked up my Pixel C to a Windows 10 laptop using the Monoprice cable, and verified that it indeed enumerates at SuperSpeed using the USBView.exe app, and that large file transfers are stable. This is a great cable to have for MacBook users especially who want to use Target Disk Mode, which requires a SuperSpeed capable USB cable.

Now for more subjective aspects of this cable. 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 Monoprice.

In conclusion : A high quality charging and data sync cable from Monoprice. 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 future proof for fast charging USB Type-C devices to come, as well as future proof for USB 3.1 SuperSpeed devices like the Pixel C!