Sep 15, 2017 How do USB Type-C™ chargers support older USB devices? tl;dr: All new USB-C dedicated chargers must also support USB Battery Charging 1.2 Dedicated Charging Port (BC 1.2 DCP), a common charging method supported by the vast majority of devices from all manufacturers. Ever run into a situation…

Feb 26, 2016 What does it mean when a cable is rated at 3A? tl;dr : The USB Type-C™ spec has a quantifiable benchmark that cables must meet or exceed for wiring and connector quality. I’ve been running into a different kind of bad cable lately, and I wanted to…

Nov 28, 2015 Can Qualcomm QC and USB Type-C™ coexist on the same connector? I get this question sometimes, so I wanted to do a quick post to address it. tl;dr : USB Type-C Spec forbids it. Longer explanation: Qualcomm’s QuickCharge 2.0 and 3.0 use variable voltage on Vbus in…

Dec 3, 2015 Why are there no USB Type-C Receptacle to USB Type-B plug or USB Type-A plug adapters? tl;dr : Type-C spec forbids it, as such an adapter could allow a user to create unsafe conditions. I’ve gotten this question several times, mostly from people trying to find small…

Nov 29, 2015 What happens when you plug two USB Type-C™ host ports together with a C-to-C cable? Will something bad happen? tl;dr: As long as both sides comply with the spec, nothing bad should happen! As an addendum to my Configuration Channel post (https://medium.com/@leung.benson/usb-type-c-s-configuration-channel-31e08047677d), I wanted to answer the…

Nov 27, 2015 I’ve been getting questions about why certain kinds of USB adapters or cables work to charge new USB Type-C™ devices, and why other adapters are necessary to charge legacy devices from USB Type-C chargers. This post will explain why and will do a deeper dive into USB…