It is not the same thing to elaborate on the wireless network card and wireless network card

With the popularity of laptops, mobile Internet access has become the most urgent partner, but many readers are wondering that there is a wireless network card on the market and a wireless network card, although only a word different, however, their functions are quite different. What is the difference between the two prices? The following describes the differences between a wireless network card and a wireless network card.

Wireless Network Card and network card joke

Recently, a friend bought a laptop with a built-in wireless network card, but he cannot access the Internet anytime, anywhere. He also needs to buy a wireless network card. Why? In fact, wireless network interfaces and wireless network interfaces are two concepts. computers without wireless network interfaces can access the Internet anytime, anywhere.

The function and function of a wireless NIC are the same as that of a common computer Nic. It is used to connect to a LAN. It is just a device for sending and receiving signals. Only when the egress of the Internet is found can the ENI be connected to the Internet, and the wireless network card can only be confined to the configured Wireless LAN.

If you want to use the wireless network card that comes with your laptop to connect to the Internet, you need to activate the Internet service, such as ADSL), and then purchase a wireless device, wireless route, or Wireless AP, laptop computers can access the Internet wirelessly within the range of wireless signals. Generally, it is okay for a home wireless router to cover the entire family. In addition, Internet access is available in some public places, such as airports, coffee shops, star hotels, and other places with wireless network coverage. The function of a wireless network adapter is equivalent to a wired MODEM. It can be used wherever wireless phone signals are covered.

Use wireless NICs with wireless LAN

"Wireless network adapter" is a device in the wireless network of a terminal. It is a wireless terminal device used for Internet access over a wireless LAN. Specifically, a wireless network card is a device that allows your computer to access the Internet via wireless network, but a wireless network card also requires a wireless network that can be connected, if you have a wireless router or Wireless AP coverage at home or in your location, you can connect to the wireless network through a wireless network card to access the Internet.

There are many brands of wireless network cards on the market, such as D-Link, TP-LINK, network device, and Linksys. There are generally three types of interfaces: USB, PCMCIA, and PCI. The overall transmission speed is much faster than that of the wireless network adapter. Currently there are two mainstream products, one of which is based on the 802.11g label and can reach up to 54 M, one is based on the 802.11n standard and can reach up to 300 Mbps. The cost of wireless network cards is relatively low, mostly between 70 and ~ Between 200 RMB.

TP-LINK 54M wireless network card

Small Knot: wireless network interfaces, both USB interface and PCMCIA Interface, need to have WiFi signals to access the Internet, and cannot access the Internet anytime, anywhere. Remember, this is a painful lesson in exchange.

Pay-as-you-go cards are available for wireless network adapters

"Wireless network adapter" means a network adapter without network cables. The function and function of the wireless network adapter are equivalent to a wired modem, which is also known as "cat ". It can use the SIMUIM card of a mobile phone to connect to the Internet Anywhere with wireless phone signals. It is a widely used Internet medium for wireless wide-area communication networks.

Currently, due to the promotion of 3G, wireless network adapters are generally referred to as 3G network adapters. 3G wireless network adapters mainly include China Mobile's TD-SCDMA and China Telecom's CDMA 2000evdo) and China Unicom's WCDMA wireless network interfaces. There are also many brands, such as Huawei, ZTE, Internet news, and Datang Mobile. The overall speed is slow, the highest rate of the nominal TD-SCDMA is 2.8 Mbps, the highest rate of EVDO is 3.1 Mbps, and the nominal fastest WCDMA rate is 14.4 Mbps, although much faster than the original rate, however, it is not of the same level as the wireless network card. It is expensive, usually at 200 yuan ~ Between 1000 RMB.

Note: When 3G is being promoted, you can get a free wireless network adapter if you purchase a certain fee in the business office.

Huawei EC169 EVDO wireless network adapter

Small Knot: wireless network adapter can access the Internet whenever there is a cell phone signal, it can be said that basically achieve access anytime, anywhere, the obvious difference between it and wireless network adapter is that there is a SIMUIM) card slot, SIMUIM card required.

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