Only two of the four USB ports-C Thunderbolt 3 the new 13-inch MacBook Pro transfer data at full speed. This is evidenced by a document published on the Apple support website.
On the page technical support for MacBook Pro 2016 describes the features of the universal connector 3 Thunderbolt speeds of up to 40 Gbps replacing power connectors, Thunderbolt 3, USB-C 3.1, HDMI, DisplayPort, and VGA to new laptops. Provided that the data transmission speed for this interface “may depend on the model.” In particular, the 13-inch MacBook Pro with Touch panel Bar only two ports provide bandwidth of PCI Express.
Two USB type-C, located on the right side of the laptop, support all features of the standard Thunderbolt 3, but have a bandwidth limit, whereas two connectors on the left side operate in accordance with PCIe.
“Always connect high-performance devices to the connectors on the left side of the MacBook Pro (13-inch, 2016, four Thunderbolt port 3) to obtain the maximum throughput,” says Apple in the document.
The 15-inch MacBook Pro models, all four of the USB type-C Thunderbolt 3 are “full”, and the 13-inch MacBook Pro 2016 without panel Touch ID only two USB-C but with full bandwidth.
Presentation of the new MacBook Pro was held on Thursday, October 27. Fourth generation MacBook Pro in addition to external changes and multi-touch OLED panel Touch Bar received a more powerful and efficient processor, enhanced discrete graphics, and faster SSD.
The maximum available amount of RAM in the MacBook Pro was at 16 GB. Apple has explained that the use of the RAM more than 16 GB would have a negative impact on battery life of the laptop, most users still wouldn’t use all 32 GB of RAM. However, the company advised the author of the letter be sure to try the new MacBook Pro at work, to see how this “incredible system”.