It supports device one after another!
USB Type-CAs for the downlink as for the power supply
Day of one of this approaches
Next-generation connector

What is USB Type-C?
We introduce merits such as Power Delivery rechargeable rapidly

When we transfer data and connect peripheral device and charge, USB is standard necessary for digital life now. But there are "Type-A" (Standard-A) "Type-B" (Standard-B) "Type-C" and plural standards even if we say USB to a mouthful, and there is "USB Type-microB using small connector in same Type-B, too". Therefore it becomes hard to know what is different how.
Here, let's introduce about Type-C standard that is largely powerful from past USB standard including Power Delivery which is the biggest merit.

※As for the official name of Type-A, Standard-A, official name of Type-B become Standard-B, but explain using Type-A used with brand names, notation of Type-B with this article.

What is role of USB standard?

USB takes initial character of Universal Serial Bus (universal serial bus). We become intended to connect peripheral device such as printer and mouse to PC as main role of USB.
At first, let's easily introduce the role what USB standard is.

Interface before USB standard appearance

Shape of port and connector was different in PC before USB standard came up for each connected apparatus. For example, standard was different for each apparatus including "RS-232" where "PS/2 connector" connected modems to "IEEE 1284" where "SCSI" that we connected outside hard disk or scanner to connected printer to if it was mouse and keyboard. We are considered to be "Legacy Interface" now, and these are not used except a part very much.

Background where general standard such as USB was pursued in

There are some weak points where various standards of port and connector are jumbled up close together. For example, peripheral device is not usable when we buy a new PC when it is not model corresponding to various standards. Conversely, it did not lead to own PC when we purchased new peripheral device…We might say this.
Of course such a mistake does not occur if we check at the time of the purchase properly, but may fail if it is person who does not know a lot about PC.

However, PC is not thing which some fans just have without thing which we just use by work as in the past. yona which "moves if we connect cable", simple PC are sought both children and adults.
As for the USB, it was thought as unification standard of device connection to be usable to anyone who fitted in such times.

Birth of USB standard

Standard called "USB 1.0" that came up is hardly used now, but can connect keyboard and mouse, printer, scanner, various apparatuses including hard disk first if we have PC corresponding to USB standard after improved "USB 1.1". Data transmission is possible if we tie hard disk or USB memory.
In addition, it is big merit that USB standard brought that can get electricity of connected apparatus from PC.

In this way, data transmission from storage device or power supply from PC are cited in role of USB standard other than connecting various peripheral devices.

Type of USB standard

It was USB standard that was born as general standard to connect various peripheral devices, but accomplished evolution as having mentioned above to improve performance.
In this way, even if it is the same USB, there are plural standards, and shape of connector is different, too.
"Micro-USB" used for smartphone of "USB Type-B" which is often used with large peripheral devices such as printer and Android "USB Type-A" used for connection such as keyboard or mouse exists. In addition, in 2014, "USB Type-C" which could transfer a large quantity of data at high speed came up. Here, let's introduce about USB standard used well even now.

USB 1.1

Flat rectangular-shaped USB connector is USB 1.1, and transfer speed becomes up to 12Mbps. It may be thought if we hear with USB if there are many people remembering connector of this form. In fact, connector of this USB 1.1 is shape same as USB Type-A described below geometrically.
In addition, we place cable of USB Type-A and can use for connector of USB 1.1. But we cannot take out transfer rate up to 12Mbps or more as it is compatible with low rank.

USB Type-A (USB 2.0/USB 3.0)

Like USB 1.1, flat rectangle-shaped USB connector is USB Type-A. USB Type-A connector supports USB 2.0 and USB 3.0. As for the transfer speed of USB 2.0, up to 480Mbps, transfer speed of USB 3.0 become 5Gbps.

USB Type-B (USB 2.0)

Connector which is of trapezoid is USB Type-B (USB 2.0). It is standard that is often adopted in external hard disk or printer. The PC body does not have terminal which we can connect this standard to, and this connector is adopted by the device side. Therefore one connects with PC and external hard disk or printer using cable that the other side becomes USB Type-B (USB 2.0) in USB Type-A (USB 2.0). Transfer speed becomes up to 480Mbps.

USB Type-B (USB 3.0)

Connector of 2-story structure that connector further pointed out on the connector of USB Type-B (USB 2.0) is USB Type-B (USB 3.0). As shapes are different, in same Type-B, there is no compatibility with USB Type-B (USB 2.0). Like USB Type-B (USB 2.0), the PC body does not have terminal, and this is standard adopted to peripheral device, too. Transfer speed becomes up to 5Gbps.

USB Type-C (USB 3.1)

It is flat, and elliptic-shaped connector is USB Type-C. For USB standard, it supports USB 3.1. As connector part does not have distinction between top and bottom, unlike conventional connector, we do not have to worry to get a wrong plug direction. Transfer speed becomes up to 10Gbps. In addition, USB 3.2 has been already developed as the latest standard, and daily necessity is going to come up in late 2019.

USB mini (A/B)

Small trapezoid-shaped connector is USB miniA, the same trapezoid, but it is USB miniB that does not have many differences of length of side of top and bottom. We may call mini USB. Because connector is small, it is standard used for digital cameras well. However, there is a problem of the durability to fail when we repeat exclusion and adding and is losing the seat to USB micro described below now. As transfer speed is USB 2.0, it becomes up to 480Mbps.

USB micro (A/B) (USB 2.0/USB 3.0/3.1/3.2)

USB microA, trapezoidal-shaped connector are USB microB flat rectangle-shaped USB connector. We may call micro USB.
It is convenient to be connector which is small like mini USB in standard used with cell-phone. As transfer speed is USB 2.0, it becomes up to 480Mbps. In addition, micro USB includes Micro-B connector corresponding to USB 3.0/3.1/3.2, too, but shapes are different from USB 2.0 standard.


"Lightning" is standard that Apple developed. It is USB terminal and accessible standard, but is not USB standard exactly. It is adopted only to product made in Apple company, but there will be much which we have seen basically as it is adopted to iPhone with much traffic. It has a shape of thin board geometrically. As connector part does not have distinction between top and bottom, we do not have to worry to get a wrong plug direction with this. In addition, we are not announced about transfer speed.

Merit of groundbreaking USB standard "USB Type-C"

Various standards are existing USB, but USB Type-C is adopted one after another now. As for the reason, there are high speed transmission of standardized up to 10Gbps being possible or thing to connector part without distinction of top and bottom in USB 3.1/3.2. As well as that, reasons include alternate mode (Alt mode) which we can connect to supporting USB Power Delivery (power delivery/PD) and various apparatuses. From here, we will introduce merit of USB Type-C in detail.

We cope with next-generation transfer standard!
Super-high-speed data transmission is possible

USB Type-C supports next-generation transfer standard USB 3.1, and speed becomes up to 10Gbps. If it is this speed, we can transfer, for example, data of 1GB in about 0.9 seconds. It is USB Type-C (USB 3.1/3.2) that can send such a large-capacity data in instant. In addition, conventional USB 3.1 may be called "USB 3.1 Gen2" as USB 3.0 would be transcribed into "USB 3.1 Gen1" with update. It is going to be supported appearance planned USB 3.2 in late 2019 in future.

USB Power Delivery correspondence

The USB Type-C's greatest Features is thing corresponding to USB Power Delivery.
It is AC Adapter using original connector most that used for Charge of electronic equipment until now. However, it of maker which by having come to be able to supply in USB standard, adopted USB power adapter port in Charge of smartphone increased. But we cannot charge note PCs because we cannot supply large-capacity electricity in past Specifications. Therefore USB Power Delivery was born as new USB feeding standard. Here, let's introduce merit that USB Type-C was provided in thing corresponding to USB Power Delivery.

We unify interconnection cable with USB Power Delivery-adaptive cable

This was because it did not connect the host side and the device side by mistake that the PC side connected USB Type-A, the peripheral device side in different connectors to say USB Type-B until now. If this is wrong, and it is connected, direction of power supply is reversed and is not charged, and this is because machine does not work. However, we do not have any problem as bidirection can supply if it is cable of USB Type-C corresponding to USB Power Delivery. In this way, it is not necessary that wiring becomes comfortable, but also carries when going out plural cables as connection is enabled to all apparatuses with one cable. In addition, we ceased to make mistake of direction to insert as connector of USB Type-C did not have distinction between top and bottom.

Increase of target apparatus and shortening of charge time are possible by power supply of up to 100W

You became able to supply electricity of up to 100W by having supported USB Power Delivery. For example, we might supply electricity of about 20 times as electricity of portable power charger and battery charger used conventionally was around 5W.
In past USB standard, we were able to charge small apparatuses such as smartphone, but apparatus which by having supported USB Power Delivery, needed big electricity including note PC and liquid crystal display came to be able to supply.
In addition, signal line to establish Charge method called "CC" is in USB Type-C. Thanks to the grace, electricity that was most suitable on the battery charger side was chosen when we connected apparatus to USB Power Delivery-adaptive battery charger with USB Type-C cable and made possible fast charging.

AC Adapter commonizes

If there is one Power Adapter with USB Type-C terminal as we can supply 5V, 9V, 15V, electricity corresponding to four Voltage of 20V in USB Power Delivery, we make possible note PC and smartphone, Charge to different apparatus including liquid crystal display.
However, please be careful as you can just just commonize in standard as you cannot charge without power to lay electricity that it can supply to AC Adapter.

We can replace the receipt side with the supply side of electricity by roll swap

By function called "roll swap" of USB Power Delivery, we can have swap (replace) of the supply side and the receipt side of electricity. For example, electricity is supplied to display side from the note PC side if AC Adapter is connected to note PC when we tie note PC and liquid crystal display with USB Power cable for Delivery, and AC Adapter is not connected to display. Of course electricity is supplied from the display side to the note PC side if condition is reversed.

With alternate mode
We can use signal except USB

USB Type-C corresponding to USB 3.1 can use alternate mode to be able to carry away signal except USB standard.
In this way, even USB Type-C cable can carry away signal of HDMI, and television monitors have the Video output. In addition, we make possible high speed communication called 40Gbps as high speed communication standard called "Thunderbolt 3" adopted to Apple products is available if it is cable corresponding to Thunderbolt 3.

With care to cables to use
Let's build environment utilized merit of USB Type-C

There is merit using USB Type-C a lot. However, you must warn one when you use USB Power Delivery. Product corresponding to all USB Power Delivery including battery charger and cable needs that let alone apparatuses such as note PC or smartphone.
For example, in cable of USB Type-C, there is product which does not support USB Power Delivery and cannot utilize USB Power Delivery when this cable is used. Please build environment utilized merit of USB Type-C while being careful about these points.

Difference between USB 2.0 and USB 3.0?
Difference between USB 2.0 and USB 3.0 is data movement speed and electricity supply. USB 2.0 can transfer up to 480Mbps, USB 3.0 in up to 5Gbps. Electricity that we can supply from Universal Serial Bus port increases near 900mA (USB 3.0) and the double from 500mA (USB 2.0). If form of inserting mouth is the same, we can put cable of USB 3.0 in port of USB 2.0, but, as for transfer speed and the electricity supply, it is performance of USB 2.0. About difference in transfer speed of USB
What is alternate mode?
In USB Type-C, it is function that is available for the purpose of varying except normal data communication. We stroll around the DisplayPort traffic light from USB Type-C port and output Video to monitor, and we use as high speed communication standard called "Thunderbolt 3" adopted with Apple products, and there is. About alternate mode of USB Type-C
USB Type-C and Thunderbolt 3 look like terminal which both have the same, but what is different?
USB Type-C expresses form of terminal. Thunderbolt 3 is standard equipped with to Apple products, and shape of connector is the same as USB Type-C, but Supported Devices can perform high speed data transmission of up to 40Gbps. As there are USB Type-C terminal and cable which do not support Thunderbolt 3, let's warn. About Features of Thunderbolt 3
Difference between USB Type-C and Type-A, Type-B?
We express shape of terminal each. Flat rectangle that Type-A is much PC and sees-shaped terminal, Type-B are trapezoid to be seen in printer-shaped terminals. It is flat and can insert Type-C without distinction between top and bottom with elliptic-shaped terminal. Besides, there is terminal called micro B used in miniB or smartphone used with digital cameras. About difference in shape of connector
Is there how to distinguish USB 2.0 and USB 3.0?
Shape of appearance is the same, but USB-IF (USB Implementers Forum) which is trade group of USB recommends that terminal and cable of USB 3.0 do the inside of connector in blue, and many products follow the rule. We confirm enlarged picture of connector image
What is difference in USB standard?
There is thing prescribing maximum transmission rate and electricity supply including USB 3.0 and USB 2.0 that we express shape of terminal including Type-A and Type-C in standard of USB. For example, shape of terminal is Type-C, and product which can communicate at a speed of up to 10Gbps set in USB 3.1 is expressed like "USB Type-C" (USB 3.1). Example of combination of USB standards pattern