Issue:
Ask about the desktop installation of wireless network card need to consider the impact of the motherboard and CPU, the old computer at home can only be recognized as 100M, the computer itself is a gigabit wired network card, the bright line is not good-looking, can only consider the wireless network card, here for help?
Response:
There are two options for installing a wireless network card on a desktop, one is a USB external wireless network card, and the other is a built-in wireless network card, and the differences between the two are as follows:
1. USB external wireless network card can be used on any computer, so the compatibility is better, but because of the compatibility, the performance is relatively poor, there are many that only support 2.4G, and many only support Wi-Fi 5, and there are many NANO sizes, because the antenna is too small, so the power is also very poor. With this kind of wireless network card, there is a high probability that the CPU and motherboard factors do not need to be considered.
Second, the built-in wireless network card, you must consider the impact of the motherboard and CPU.
1. Some CPUs have built-in support for Wi-Fi, this kind of CPU only needs to install a radio frequency module to use Wi-Fi, so you can buy a relatively cheap wireless network card with only a radio frequency module, such as intel10 generation and later CPUs only need to buy a wireless network card that conforms to the CNVi protocol. CPUs that do not have built-in Wi-Fi function need to purchase a full-featured wireless network card before they can be used, so you need to tell the store your CPU model before buying, and let the store help you choose the right model;
2. There are many interfaces for the built-in wireless network card, such as PCIe slot, M.2 slot, MINI-PCIe slot, you have to take a look at the slot on your motherboard first, if you can't recognize it yourself, you often need to take a photo, and then tell the store, the store can choose the wireless network card suitable for your motherboard slot for you. M.2 and MINI-PCIe slots are available for both laptops and desktops.
3. The built-in wireless network card also needs to consider the problem of antenna, such as the built-in antenna is more convenient, but the power is limited, the distance and speed will be limited, the external antenna needs to be purchased, and the wiring is also more complicated, but the distance and speed will be relatively large. (The picture below shows the built-in antenna, the laptop can only use the built-in antenna, and the desktop can use the built-in or external)
Only by considering the situation of the motherboard and CPU, can we choose the most suitable wireless network card under the current conditions.
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