What is the difference between wireless card types?

Wireless card is a terminal wireless network equipment, is not through the wired connection, the use of wireless signals for data transmission terminals. With the introduction of IEEE802.11A, IEEE802.11B standards and the establishment of Wi-Fi organizations to promote the compatibility of wireless LAN products, standardization and marketing. Since then, the wireless LAN with the popularity of the computer has been more and more attention. Wireless card is actually a kind of terminal wireless network equipment, it is necessary to wireless LAN wireless coverage through the wireless network for Internet use. In other words, wireless network card is to enable your computer to use wireless to access the device, but with a wireless network card also needs a connection can be connected to the wireless networks, so you need to cooperate with the wireless router or wireless AP use, you can wirelessly connect through the wireless network connection to the Internet.

Wireless Card classification

The function and function of the wireless card is the same as that of the ordinary computer card, which is used to connect to the LAN. It is only a signal to send and receive equipment, only in the Internet to find the export to achieve the connection with the Internet, all wireless network card can only be limited to the scope of the wireless LAN has been installed. Wireless network card is not through the wired connection, the use of wireless signal to connect the network card.

Wireless card can be differentiated according to different types of interface, the first is the USB wireless network card, is the most common; the second is the desktop-specific PCI interface wireless network card; The third is the laptop-specific PCMCIA Interface wireless network card, the fourth is the notebook computer built-in MINI-PCI wireless network card.

As mentioned above, we have a wireless network card is unable to connect to the wireless networks, must also have a wireless router or wireless AP. Wireless card is like a receiver, no line by the equivalent of the transmitter. In fact, the need for wired Internet access to the wireless cat, and then the signal into wireless signal sent out, received by the wireless network card. The general wireless router can tow 2-4 wireless card, the work distance within 50 meters effect is good, far the communication quality is very poor.

Wireless network card Mainstream standard is IEEE 802.11n, it greatly enhance the competitiveness of wireless LAN, wireless LAN standards, rapid development of technology, products gradually mature, the application of wireless LAN is increasingly rich. More and more home users are starting to use wireless networks, many enterprises also in their own office building in the deployment of wireless local area network, at the same time, telecommunications operators of wireless LAN also gave great attention, now whether in the airport, hotels, cafes and other public areas to lay public wireless network, to provide convenient wireless internet access.

The above mentioned wireless card according to the different interface can be divided into a variety of:

One is a desktop-specific PCI interface wireless network card.

One kind is the PCMCIA interface card which is dedicated to the notebook computer.

One is a USB wireless network card, which, whether it is a desktop user or a notebook user, can be used as long as the driver is installed. In the selection should be noted that only the use of USB2.0 interface wireless network card to meet the requirements of 802.11g or 802.11g+. USB Wireless network Card In addition, there are more widely used in notebook computer MINI-PCI wireless network card. MINI-PCI is a built-in wireless network card, which is used by both the Centrino model and the non-Centrino wireless network card standard models. The advantage is that it eliminates the need for a PC card or USB slot and eliminates the hassle of carrying a PC Card or USB card at any time. These kinds of wireless card in the price gap is not small, in the performance/function is similar, you can choose on demand.