I was surprised knowing that RV220W does not work on 5GHz and 2.4GHz modes simultaneously (and this information was found only in the manual). So I'll have to buy one more device in order to have both bands working (one for 2.4GHz and one for 5Ghz). I search in internet and found that Linksys E4200 router has dual-band mode and use the same wireless chip. What was the reason to set such selection in RV220W?