To "squeeze" the wireless function, you must first select the wireless network card

Wireless Internet access is a new trend, and the rise of it has caused a wave of buying wireless devices. However, when purchasing hardware, many friends often ignore whether the model of the wireless network adapter matches the model of their laptop. Here is a typical example for your analysis.

Typical Cases

Ignoring accessory interfaces is not common.

Both Mr. Zhang and his wife are white-collar workers. Unfortunately, both of them often encounter the need to go out to work. In order not to compete for laptops at home, they purchased a new notebook, but they were surprised to find that, the original CDMA wireless network card could not be inserted into the wireless network card slot of the new notebook. Surprised that Mr. Zhang carefully checked the relevant information, he was surprised to find that, the "PCMCIA" interface is used to connect your wireless network adapter, while the newly purchased notebook supports the "Express Card" access method. It seems that due to your negligence, it seems that Mr. Zhang and his wife had to spend hundreds of dollars to purchase a new wireless network card ｡

Technical explanation

The Interface System of the wireless network adapter is complicated.

Previously, many people ignored that the CDMA wireless network adapter has multiple interface methods. PCMCIA, CF, USB, SD, RS232, and Express Card interfaces, the PCMCIA Interface is the most popular access method and is supported by most laptops, its speed of surfing the internet is relatively fast, which is a type that we can choose with confidence. It should be noted that interfaces such as PCMCIA and Express Card are on the network Card, the USB and RS232 interfaces can only be used in laptops. The NICs can also be inserted on desktops with corresponding interfaces. When your home broadband encounters problems, they provide wireless Internet access services for your desktop ｡

Different Interfaces

Different security and power consumption coefficients

Different interfaces make different processes and technologies for wireless network interfaces. As a result, the security coefficient and power consumption of network interfaces are different, the so-called security factor issue is not about the security of the computer software environment, but about the security of your computer hardware. Generally, the NIC of interfaces such as PCMCIA and Express Card, can be completely inserted into the dedicated slot of the notebook, the network card is basically not exposed. Otherwise, for the network card of the USB interface, due to the depth of the USB slot, most network adapters are exposed. If you use your laptop at home, if you are in a crowded environment or use a laptop to access the Internet in the car, once there is a bump, the NIC and your computer slot are vulnerable to damage ｡

In addition, for wireless network cards that only apply to laptops, most of these cards are specially designed for power-saving considering the portable functions of laptops, the power-saving design is not the focus. In this regard, you should also consider it when purchasing ｡

Consumption suggestions

The safest way to buy USB interface accessories

Back to the problem that Mr. Zhang encountered, if he purchased a wireless network card for the USB interface at the beginning, then he would not encounter the interface not applicable and could not be used in general, the vast majority of users will have USB interfaces, so purchasing USB interface accessories is naturally the most safe solution. Considering that the replacement of laptops is faster, and the NIC you bought may support several generations of laptops, therefore, the purchase of a USB interface NIC will be a good solution for compatibility issues ｡

Accessory Adapter

The magic of "Decay"

For users who have already purchased wireless network interfaces, if the old card interface and the new notebook are not applicable and cannot be used, in addition to purchasing a new network interface, there is also a coup to solve the problem, I just bought a Adapter. Due to the wide variety of interfaces on the network card, each computer supports up to one or two access methods, the emergence of the converter is naturally inevitable, of course, the merchant will not give up this business opportunity. If you don't have to spend much time buying a adapter, you don't have to pay several hundred yuan to re-purchase a wireless network adapter ｡