If you are not sure if the Windows laptop you are considering is single-band or dual-band, look under the laptop's wireless device/Wi-Fi card specifications on the box, label, or product webpage. Look ...

An 802.11 (Wi-Fi) router that uses the 2.4 GHz and 5 GHz frequency bands. Prior to 802.11n, dual-band routers handled 802.11a users in the 5 GHz band, while simultaneously supporting 802.11b and ...

We’ve seen a bunch of versions over the years with both Tensilica and RISC-V cores, but so far the ones with radios have all only serviced 2.4 GHz WiFi ... to beyond the dual-band 2.4GHz ...