7 Related Knowledge of Laptop Ports

First, the laptop power port
The notebook power port is a necessary port, which is used to supply power to the notebook and charge the battery. Notebook power port generally include circular power port, square power port, and USB Type-C power port. Do not mistake the square power port for USB. port. Among them, the circular port is the most common, because the diameter of the circular port is different because of different specifications.

Second, the notebook USB port
The USB port is the most common port in the computer. At present, the common USB port are USB 2.0, 3.0, and 3.1. Higher versions represent faster speeds, but there are special cases. For example, the speed of USB 3.1 Gen 1 is the same as USB 3.0. Both are 5Gb / s. There are two types of common USB port: Type-A and Type-C. Type-A is the most common. Type-C is an port that has become popular in recent years. The most obvious advantage of Type-C is that it supports positive and negative plugs. It is very convenient to insert it wrongly.

Type-C also has a special form, which is Thunderbolt 3. The Thunderbolt 3 port can not only be used as a conventional USB port to transmit data, but also be used as a video output port to connect an external display. It can even supply power to a notebook or external device. It is a very comprehensive port. Generally, there will be a small lightning logo next to the Thunderbolt 3 port, and users can distinguish it based on this logo.

Third, the video port
The video port on a notebook computer is generally used for external displays and extended screens. There are three types of video port: VGA, HDMI, and DP. The best port is DP, followed by HDMI, and the worst is VGA analog signal video port. DP is divided into two types: standard DP and Mini DP. Mini DP is smaller in appearance. Standard DP port is rare. Most laptops currently use Mini DP port.

Fourth, the network port
The network port is also called RJ-45 network port. It is a wired network port. After connecting the network cable, it can realize the Internet access function. In addition to connecting the network cable, the notebook has a built-in wireless network card, which can also achieve wireless Internet access.

Five, audio port
The diameter of the audio port jack is 3.5mm, which can connect headphones, stereos and microphones. Generally, the green jack is the audio port for headphones and stereos, while the pink jack is the audio port for microphones. The color is marked with an icon.

Six, SD card reader slot
SD card reader is used to connect the memory card of camera or mobile phone. SD card reader is divided into standard SD card reader and Micro SD (TF) card reader, which correspond to standard SD card and Micro SD card respectively. As the name suggests, the Micro SD card is smaller than the standard SD card, so the Micro SD card reader on the notebook is also smaller.

Seven, security keyhole
The security keyhole is a function to prevent theft of the notebook. It can only be used with a security lock. The security lock is not included with the notebook. We need to buy it.