Apple has finally introduced a new 12-inch MacBook with 2304×1440 high resolution, butterfly-style full-size keyboard, new touchpad, 14nm Core M processor and fanless design, and a new USB 3.1 Type-C interface. .
Apple has finally introduced a new 12-inch MacBook with 2304×1440 high resolution, butterfly-style full-size keyboard, new touchpad, 14nm Core M processor and fanless design, and a new USB 3.1 Type-C interface. . It can be expected that this kind of ultra-fast speed, no distinction between front and back, video transmission and other signals, high-power charging interface will be rapidly popularized with Apple's adoption, and Google's new Chromebook Pixel is also equipped with it.
Apple MacBook USB Type-C interface is beautiful? It is not perfect!
The Type-C interface is a very flexible design. It is theoretically capable of multi-format data transmission over 20 Gbps. It also supports power supply up to 100W (20V/5A). However, it does not require a version of the USB protocol. It can be up to date. USB 3.1 can also be an old USB 2.0.
On the other hand, USB 3.1 is mainly aimed at the latest definition of transmission speed, and the theoretical bandwidth reaches 10Gbps, which is twice the USB 3.0 5Gbps. Although it is a bit slower than the Intel Thunderbolt 2, it is enough for most occasions.
That is to say, if you want to achieve 10Gbps, you must use Type-C, and using Type-C does not mean that the speed can reach 10Gbps.
Apple's USB Type-C here mainly has three transmission functions, namely USB data, power supply/charging, and DisplayPort video. However, since the Intel Core M platform does not natively support USB 3.1, it can only support a transmission rate of 5 Gbps, that is, It is the same as USB 3.0.
In fact, Apple can use third-party master control, just like many motherboards, transfer devices, and mobile hard drives, but this kind of master control is still not much, and they have not passed the certification, it is inevitable that there are compatibility issues. Second, adding a new chip means taking up more motherboard area and cooling space, so Apple has abandoned it.
Of course, 5Gbps is still sufficient to meet user needs, and can be upgraded in the future.
However, Apple's interface here is not called USB 3.0, but the so-called USB 3.1 Gen1, the rate is halved than the standard, and the future full-speed version will be USB 3.1 Gen2.
Well, this is the same reason that USB 1.1 was incorporated into the USB 2.0 system and called USB 2.0 FullSpeed. It sounds a little better.
In terms of power supply, the Apple Type-C has a maximum power of 29W and does not reach a high standard, but the current can be output to a maximum of 5A. Coupled with USB Power Delivery 2.0, it also shows that Apple is gradually moving closer to the open industry standards, rather than blindly doing its own set.
As for the new MacBook, there is only such a USB Type-C interface (and the headphone jack), even the iconic MegaSafe is gone, it will cost money to transfer, it is very inconvenient.
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