The difference between a wireless network card and a Wi-Fi

The two concepts of wireless NIC and wireless Internet card, many novice users often confuse these devices, and some businesses in the sale of propaganda sometimes confused these two devices, in the introduction of such equipment often confuse the functions of the two devices, such as "Our wireless network card can also be composed of other wireless cards and wireless networks", But surely they are not a device. Let's start with a look at what the difference is between a wireless card and a wireless one:

Wireless network card:

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 according to different interface, mainly has PCMCIA wireless network card, PCI wireless network card, miniPCI wireless network card, USB wireless network card, CF/SD wireless network card several kinds of products.

In terms of speed, wireless card is now the mainstream speed of 54M and 108M, the performance and environment has a great relationship.

54MBPS: Its WLAN transmission speed is generally between 16-30mbps, converted into MB is the speed of transmission per second around 2MB-4MB. Take the middle value of 3MB, such a speed to transfer 100MB files need about 35 seconds, to transfer 1GB files, it will take at least 4 minutes or more.

108MBPS: Its WLAN transmission speed is generally between 24-50mbps, converted into MB is the speed of transmission per second around 3MB-6MB. Take the middle value of 4.5MB, such a speed to transfer 100MB of the file needs about 25 seconds, to transfer 1GB files, you need at least 2.5.

Wireless network card is not through the wired connection, the use of wireless signal to connect the network card. Wireless card according to different interface, mainly has PCMCIA wireless network card, PCI wireless network card, miniPCI wireless network card, USB wireless network card, CF/SD wireless network card several kinds of products.

Wireless Internet card:

The function and function of wireless Internet card is equivalent to wired modem, which is called "cat". It can connect to the Internet using a mobile phone's SIM card anywhere it has a radiotelephone signal covered.

The function and function of wireless Internet card is like a wireless modem. Its common interface types are PCMCIA, USB, CF/SD and other interface types.

From the speed, wireless Internet card is mainly divided into GPRS and CDMA two kinds. Its speed will also be affected by various barriers such as walls, other wireless signals such as mobile phones, microwave ovens and other interference.

GPRS actual speed: Basic and 56Kbps of modem speed flat.

CDMA Real speed: To 153.6Kbps, is home phone line four times times the internet.

What type of Internet do you want to use?

1, if you want to wireless Internet access anytime, you need to buy another wireless internet card (price 500-1 thousands of different), you also need to move or connect the business hall to buy a fee card (is the mobile card), and then the Internet services opened on the line, the specific cost of the Internet, there are many package options, a word: expensive.

2, if you want to use your notebook with wireless network card wireless Internet, you need to open your home Internet service (such as ADSL), and then buy a wireless device, no line by or wireless AP (three hundred or four hundred can be done), your notebook in the wireless signal coverage can be wireless internet, General a home wireless router covering a family no problem, you can not wireless Internet when you are out of the house. In short, as long as you have a wireless device nearby, your wireless network card can receive wireless signals, others are not encrypted, the general situation you can wireless internet.

Wireless adapter and wireless card These two things, do you understand? Don't confuse them again, hope you can know more about your wireless network, you can go to our relevant channel to read relevant knowledge.