“Opening” the 12.9-inch iPad Pro shows that Apple has used the new Lightning connector, which supports high speed charging and data transfer.
USB-C 12-inch MacBook allows you to charge the laptop from the adapter with a capacity of 29 Watts. As specialists have found out ArsTechnica, a similar opportunity and offers a Lightning connector in the iPad Pro. Using a cable that is present in the standard package of the tablet, you can charge the gadget only the standard USB 2.0 speed, so those who want to take advantage of high speed will need to buy a new cable with support for USB 3.0. But there is one small catch — these cables are not yet available.
In accordance with the specifications of the iPad Pro, the device can be charged from the source voltage of 14.5 volts and a current of 2 amperes, which is equivalent to 29 watts. In spite of this, a 12.9-inch tablet equipped with a 12-watt power adapter.
29-watt power supplies included in scope of delivery 12-inch MacBook with a Retina display, but the device is charged through the corresponding USB 3.0 cable with USB connector. Lightning cable the iPad Pro is limited to 12 watts and connector USB 2.0. For this reason, to date, there is no way to charge the tablet using the adapter at 29 watts.
According to informed sources, Apple prohibits the manufacture Lightning cables USB-C, which would provide the ability to charge and sync your iPad Pro with a 12-inch MacBook. It is argued that third-party cables Lightning USB c-C do not meet the requirements of the company.
On the possibility of charging your iPad Pro more powerful power source indicates whether the controller Fresco Logic FL1100 4-port USB 3.0, which supports data transmission using the Lightning connector at a speed that corresponds to the USB 3.0 specification. Recall that the theoretical speed limit in this case is 5 Gbps, and USB 2.0 it is 480 Mbit/s.
The ability to fast charge iPad Pro is of interest to users, given the capacity of its battery. According to the results of the tests, complete the AC power adapter and Lightning cable allows to charge fully the 12.9-inch tablet for nearly 5 hours. Note that the battery capacity of the iPad Pro is comparable to that of the 12-inch MacBook (39,7 W∙h). For comparison, the iPad Pro battery has a capacity of 38,8 W∙h, iPad Air 2 — 27,6-watt-hour
Apple is positioning the iPad Pro as a device for users who are professionally engaged in design, processing of photos, video editing and other work. These people often actively using the tablet and charging from adapter at 29 watts would significantly save time.
Why Apple has not released a brand Lightning-to-USB 3.0 simultaneously with the release of the iPad Pro is unknown, but one can assume that this is a matter of time.