how u mean "cover top floor"?

u mean as a repeater (wireless) or AP (access point, wired to main router)?

i think this DIR842 cannot serve as repeater or AP.

i asked in Dlink thread before, nobody bothered to answer.

Just leave them empty. Don't forget to disable DHCP, and don't connect to WAN port.

if wireless, it's a repeater.

if wired to main router, it's AP.

do comment if u manage to do it, thanks.

i had wanted to use that dir842 as repeater but i could not find the option to set as repeater.

that's why i think it hasn't got that feature.

repeater in general is not a good option as it loses too mcuh by the time it gets there wirelessly.

add other losses, u won't get much.

however for 2.4ghz devices, longer distances like 60-80ft, main->repeater->devices arranged to avoid major obstacles can come out better than straight main->devices.

i am using rtac1300uhp as main, rtn12hp as repeater... only becos of one spot at far corner heavily blocked by many walls and doors.

quite ok now... no plans to buy super router.

dir842 in the drawer.

What u use as main router?

Really, unless u need high wifi speeds at far away bad spots, average eqpt for most purposes are acceptable.

If one can get 30-50mbps for browsing, phones,  android apps, smart tv... good enough.

Only when u do heavylifting stuff will u need 300, 500, 800 full... for that, use ethernet will be best.

Gotta balance usage and benefits vs additional $ spending...