fenvi fv-2030t

Here is the link: https://www.newegg.com/fenvi-fv-2030t-pci-express/p/0XM-00JK-00039?Description=wifi%20card&cm_re=wifi_card-_-9SIADXZ81V9696-_-Product My question wifi card: it states that I "must set router to 160Mhz". Does this mean that if I do not manually set my router to 160Mhz, this...