If the speed of the net, the unexpected blind spot PC or smartphone unit is slow, the bottleneck is on the bottleneck (Nikkei style) --Yahoo! News

If the performance of the slave unit is insufficient, add a USB connection Wi-Fi adapter.

Finally, of the factors that delay Wi-Fi, let's take a look at the current status of Wi-Fi, including PCs and smartphones.The Wi-Fi router and the Wi-Fi slave unit are compatible with one of the Wi-Fi standards, respectively.If the mutual standard is different, connect with the lower standard.For example, even if the router is compatible with the latest Wi-Fi 6 (4 stream), if the laptop on the slave unit is Wi-Fi 5 (2 stream), both are Wi-Fi 5 (2 stream).Communicate in.In that case, you will be worried about which PC has built -in slave unit corresponding to which standard.The latest PCs purchased in the last one or two years have Wi-Fi 6, but many of the previous models have Wi-Fi 5.Two streams for Wi-Fi 5 are the mainstream, but the lower model has one stream.[Click here for illustrations] How to check the net connection, PC and smartphone

■ Check the specifications of laptops

If you want to know exactly the specifications of your computer, check the catalog data such as the web.However, some manufacturers, especially old models, may not have detailed information on the Wi-Fi slave unit.In such a case, check from the module name of the slave unit.Right -click the start button, open the Device Manager, and check the module name of the “Network Adapter” column.It is the module name of the slave unit that has characters such as "Wireless".For example, if you say "WirelessaC", it is Wi-Fi 5.You can see more information on the web.If you do not understand the module name, guess from the actual link speed.The link speed is the maximum communication speed (theoretical value) between the Wi-Fi router and the child unit.866 megabit/second (Mbps, 1 million mega) can be inferred with Wi-Fi 5 2 streams, and 433Mbps is the same stream.If the radio wave is weak, the link speed will decrease, so check near the Wi-Fi router.The Gigabit-class optical line was introduced, and the Wi-Fi router is 6 compatible, but the child unit compatible with 4 and 5.Some users in such a disappointing environment may want to upgrade the slave unit.In such a case, use a USB connection Wi-Fi adapter.Domestic manufacturers' Wi-Fi 5 (2 streams) slippers can be purchased for around 4000 yen and 3 streams around 7,000 yen.In addition, Buffalo will release a product that supports Wi-Fi 6 for the first time as a domestic manufacturer.Consider users who are particular about communication speed.

■ The latest model smartphone machine supports Wi-Fi 6

What is the Wi-Fi standard of the smartphone?First, check with catalog data.If the necessary information is not obtained, for Android (Android), depending on the model, it may be possible to guess from the link speed.Open "Settings" and follow "Network and Internet" → "Wi-Fi", and "Sending link speed" and "receiving link speed" may be displayed.In the case of an iPhone, the link speed cannot be confirmed from the setting screen.However, in the last few years model, the performance on the slave unit is sufficient.(Writer Koji Okano) [Nikkei PC21 January 2022 Issued Articles published]