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 ...
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 ...