Not all Wi-Fi access points can use both bands at the same time. So, Wi-Fi speed is usually higher in the 5 GHz band than in the 2.4 GHz band. The advantage of the 5 GHz band is that it’s (currently) less crowded. All access points support the 2.4 GHz band, while most newer access points also support the new 5 GHz band. Wi-Fi channels are selected from a so called “frequency band”. ![]() Computers recognize Wi-Fi networks by their SSIDs, not by the channel they use. However, if you really want to manually select the Wi-Fi channels, use different channels for each access point (if possible). Most modern Wi-Fi access points can choose their Wi-Fi channels automatically and you should usually let them do this. As far as I understand it, on the first generation you need to plug your Ethernet cable into the (only-existing) Ethernet port instead. Note: I’ve only tested this with an AirPort Express Base Station of the second generation. You need to plug your Ethernet cable into the WAN port – not the Ethernet port. It’ll then pick the one that’s best suited (usually the one with the best signal strength).
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