Thank you for the tips.Then probably just go with your plan of getting the ZenWiFi BT10 two-pack (S$12 x 24 = S$288 top-up). Instead of selling two units, just sell one unit (one unit price is usally higher than 50% of the two-pack), say at S$360.
ONT -- ZenWiFi BT10 as main router (10G WAN port)ZenWiFi BT10 10G LAN port --> study room LAN port --> 10G wired device (can be for the future if you do not have one now)ZenWiFi BT10 1G LAN port --> cheap 1G switch port 1 ( eg: TL-SG105 at S$28.5 from Challenger or less in other place)Switch 1G port 2 --> RT-AX55U unit 1Switch 1G port 3 --> RT-AX55U unit 2Switch 1G port 4 --> RT-AX55U unit 3 (optional)
Sorry but my rudimentary understanding may be wrong. Can i not just replace my current main router (Asus AX55) with the Zenwifi? There are LAN cables plugged from my existing main router to the living room lan ports so that the room lan ports are active.