What is wifi card? Functions and ways to recognize wifi cards

Wifi card is a device used to receive wireless wifi signal for laptops and PCs to help users connect to the network anywhere you want. Join Tnhelearning.edu.vn to find out what a wifi card is and some functions, how to recognize wifi cards!

Learn about wifi cards

Learn about wifi card

What is wifi card?

A wifi card is a device with wireless wifi reception , used to connect electronic devices to the internet, especially for your personal laptop. The wifi card can help computers communicate with each other through the internet.

For PC computers, the wifi card can connect and communicate with the internet based on a slot on the main board of the computer. In addition, the wifi card can connect to devices through ports such as: AUI, BNC, UTP , etc. Network wires are plugged into slots such as PCI or via USB.

The wifi card is designed to be compact, mounted directly on the mainboard to have the effect of receiving wifi, to help users access the internet more easily.

Function of wifi card

• The wifi card helps your laptop to communicate, transmit power, control and statistics the user’s data source.
• Prepare a data source to be able to put information on the network, receive data from the network to the laptop. Most thanks to the wifi card that converts data from bit/byte form to electrical signal then transmits through cables and vice versa when the machine is receiving data from the network as well.
• Each wifi card is assigned its own MAC address by the manufacturer, so that users can distinguish network cards when accessing the internet. Each MAC address consists of 3 bytes as the manufacturer’s denominator and 3 bytes as the serial number. The MAC address will be provided by the manufacturer or the electronic technology institute.

Distinguish common wifi cards

Mini PCI pin standard wifi card

The wifi card with the Mini PCI pin standard is designed and widely used on laptops manufactured from 2010 to the present. Most of Atheros’ products are used by major laptop manufacturers such as Asus, Acer, Toshiba.

As for the Broadcom Mini PCI wifi card line, it is used by big laptop giants like Dell and HP. Its wifi card is also compatible with most laptops from HP’s workstations and Lenovo’s Thinkpad series.

Intel’s plug-in card line is integrated on Dell Latitude laptops and workstation lines from Dell , HP and Lenovo Thinkpad . Intel cards are mostly used for workstations that can use both bands, have high stability and especially receive 5GHz wifi waves.

However, most Intel cards are not compatible and are more picky. In addition, some models do not have built-in Bluetooth features.

Wifi card M.2 NGFF KEY E/ CNVI KEY E

M.2 wifi card has been popularly used since 2015, in terms of design, the M.2 wifi card line is longer and thinner than Mini PCI and the connection jack of the M.2 port is also more difficult to plug. The highlight of this wifi card also supports good wifi signal capture technology.

All wifi cards are supported with Dual technology, the card can receive both 2.4 GHz and 5 Ghz waves. Besides, the card also supports the latest high-speed AC standard up to 2.4G up to now.

Most companies like Intel, Atheros and Broadcom make M.2 wifi cards. Intel is a brand that many people prefer to use according to laptop brands.

All M.2 NGFF wifi cards can be used for laptops, desktops and mainboards capable of integrating M.2 wifi slot. However, with the CNVi M2 series, a new motherboard is required to support the connection.

Is the wifi card upgradeable?

The wifi card can be upgraded if you want to upgrade the features and usability. You can also choose to upgrade your wifi card by replacing it with a better quality product. In addition, you can also upgrade using a wireless expansion card.

However, not all wifi cards can be upgraded. To be able to upgrade the wifi card, you should pay attention to a number of different factors such as machine configuration, card model, product price and compatibility, …

Signs of wifi card error need to know

To know if your wifi card is faulty or not, here are some errors and signs that you should know:

• The wifi card cannot connect to the internet.
• In the process of using the computer often appear messages, errors or wrong commands.
• The network signal cannot be detected or the network can be found but cannot connect to the internet.

The above errors are the most obvious signs that your wifi card is faulty. Sometimes the wifi card can still work normally but still fail in the network devices. Here are some measures to help you fix wifi card errors as follows:

• Turn on and off the wifi switch right on the laptop.
• Check if the modem is hot.
• Check the router location such as if the location is far away and other electronic devices cause interference.
• Change the socket for the wifi unit, see if the connection cable is working properly.
• Check the wifi card driver driver.
• See if your computer is infected with a virus that blocks internet connection.
• Restart the wifi router.

So Tnhelearning.edu.vn has shared with you what is a wifi card as well as its function and how to recognize wifi cards . If you have any questions, don’t hesitate to leave a comment below for a quick response!