As is often the case when there is turnover of new standards, even the new ports USB Type-C,which are spreading rapidly, are intended to bring trouble to early adopters.
In the case of device Nexus, we saw that Google offers a cable of this type in the package of the Nexus 6 p, while Nexus 5 x lacks; Therefore, to connect your device to your PC (or an old charger, perhaps multiple ones) you must purchase one separately. Google offers this possibility, but the price is quite high: 14.99 €, whereas other manufacturers often cost even half.
In fact there are some very important differences, but they have not been explained adequately by Google headquarters: “original” Nexus cables are certified to support charging 5V/3A, fully exploited so quick charging in new devices. Explains Benson Leung, one of the engineers in the same Google who worked on the construction of these cables in cooperation with Huawei and LG, though sadly through the comments of a cable competitor at Howsmb.com.
Leung advised to avoid buying aftermarket cables that indicate the ability to recharge to 5V/3A, citing the possibility of permanent damage to the devices. For 7/8 euros of difference, we don’t seem to take that chance.