480 Mbps data transfer speed (Max 60MB/s) and 500mA current. Can be backward compatible with USB1.1. Support hot swap
Note: Mbps is "megabits per second", not "megabytes per second" that we use every day. One byte is equal to eight bits. USB 1.1 was changed to USB 2.0 Full Speed, and USB 2.0 was changed to USB 2.0 High-Speed. USB 2.0 is 40 times faster than USB 1.1.

1. Transmission rate:
With 5.0Gbps data transfer speed (Max 500MB/s), the actual transfer rate is approximately 3.2Gbps (ie 320MB/S). The theoretical maximum rate is 5.0 Gbps (ie 500 MB/S). Support hot swap
2. Data transmission:
USB 3.0 introduces full-duplex data transmission. Two of the five lines are used to transmit data, two are used to receive data, and one is ground. In other words, USB 3.0 can read and write at full speed at the same time. Previous USB versions did not support full-duplex data transfer. USB2.0 is half duplex.
3. Power supply:
The USB 3.0 standard requires a USB 3.0 interface with a power supply of 1A and a USB 2.0 of 0.5A. Instead of device polling, USB 3.0 uses an interrupt-driven protocol. Therefore, the standby device does not consume power until there is an interrupt request for data transmission. In short, USB 3.0 supports standby, hibernate, and pause states.
4. Physical appearance:
The USB 3.0 cable will be more "thick" because the USB 3.0 data cable has four more internal lines than the 2.0. However, this socket is a drawback of USB 3.0. It contains additional connected devices.
6. Support system:
Windows 3.0 is supported on Windows 10, Window 8.1, Window 8, Windows Vista, Windows 7 SP1, and Linux (and Linux-based Android). Apple's latest Apple Mac book air and Mac book pro are also supported. For XP systems, USB 3.0 can be used, but only at USB 2.0.


The maximum transfer rate of the USB-C port is 10Gb per second. But Apple said the new MacBook's USB-C port has a maximum transfer rate of 5Gbps. The maximum output voltage is 20 volts to speed up charging time. The USB-A type has a limit transmission rate of 5 Gbps and an output voltage of 5 volts.
2. Small
The size of the Type-C interface socket end is about 8.3mm × 2.5mm slim design;
3. Two-way
Supports the "positive and reverse insertion" function that can be inserted from both sides, and can withstand 10,000 times of repeated insertion and removal;
4. Charging
Standard-size cable with Type-C connector can pass 3A current, and also supports "USB PD" beyond the existing USB power supply, can provide up to 100W of power
5. Backward compatibility
USB-C is compatible with older USB standards, but users need to purchase an additional adapter to complete the compatibility.

HDMI is the abbreviation of (High Definition Multimedia Interface), which means high-definition multimedia interface. It is a digital video/audio interface technology. It is a dedicated digital interface suitable for image transmission. It can transmit audio and video signals at the same time. The highest data transmission speed. It is 48Gbps (version 2.1).
And because a 1080p video and an 8-channel audio signal require less than 0.5GB/s, HDMI has a lot of headroom. This allows it to be connected to a DVD player, receiver and PRR with a single cable.
There are 5 types of HDMI 1.4 cable. The standard identification methods are as follows:
Standard HDMI Cable Chinese Specification Name: Standard HDMI cable supports up to 2160p (3840x2160, which is 4K)/30HZ
Standard HDMI Cable with Ethernet Standard Ethernet HDMI Cable
Standard Automotive HDMI Cable Standard Car HDMI Cable
High Speed ​​HDMI Cable High Speed ​​HDMI Cable Supports 1080p, DeepColor, 3D
High Speed ​​HDMI Cable with Ethernet High Speed ​​Ethernet HDMI Cable
Output compatibility
1. Compatibility with HDMI interface TV: simultaneous transmission of audio and video;
2. Compatibility with DVI interface TV: only video transmission;
3. Compatibility with amplifiers with HDMI interface: only audio is transmitted.