NBN HFC (Hybrid Fibre Coaxial) Setup
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On NBN HFC (Hybrid Fibre Coaxial) the connection arrives over the coaxial (pay-TV style) cable into an NBN Connection Box, and your router plugs into its UNI-D port. Here’s how to set it up and what to check if there’s no internet. The Original PC Doctor sets up NBN connections Australia-wide, no fix no fee.
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How to set up NBN HFC – step by step
- Make sure the coax cable is screwed into the NBN Connection Box and the wall outlet, and the box is powered on.
- Wait for the box’s lights (power, downstream/upstream, online) to go solid.
- Run an Ethernet cable from your router’s WAN/Internet port to the UNI-D port on the NBN box.
- Power on the router, enter ISP details if prompted, and wait for the internet light to go solid.
- Join Wi-Fi using the details on the router’s label.
How to tell you have HFC
You have an NBN Connection Box fed by a coax cable (the round screw-on connector), with your router plugged into its UNI-D port.
Common problems we fix
- Loose or unscrewed coax connector
- NBN box online light not solid (signal/line issue)
- Router on the wrong port or missing ISP details
- No internet after an outage or box reset
- Slow speeds or dropouts on HFC
- Setting up after a new HFC install
Why The Original PC Doctor
- Since 2001 — 24+ years of Australian computer & network support
- No fix, no fee — you only pay if we solve it
- Onsite & remote — whichever is faster, same-day available
- All NBN types & all ISPs — FTTP, FTTN, FTTC, HFC, Fixed Wireless
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Frequently asked questions
How do I set up NBN HFC?
Make sure the coax is connected to the NBN box and it’s powered, wait for its lights to go solid, connect your router’s WAN port to the UNI-D port, power on, enter ISP details if prompted, and wait for the internet light.
What cable does NBN HFC use?
A coaxial (pay-TV style) cable with a screw-on connector feeds the NBN Connection Box. A loose coax connector is a common cause of no internet.
Do I need a modem for NBN HFC?
No – HFC uses a router (not a DSL modem). The router plugs into the NBN Connection Box’s UNI-D port.
My HFC has no internet – how do I fix it?
Check the coax is screwed in tight, the box is powered with a solid online light, and the router is on the UNI-D port with the right ISP details. We can diagnose signal or line faults.
Why does my HFC keep dropping out?
HFC dropouts are often signal-level or line issues, sometimes a loose coax or a fault needing NBN attention. We can confirm the cause and escalate with evidence if needed.
Can you set up my HFC connection?
Yes – we connect the box and router, enter ISP details, set up Wi-Fi and confirm the connection, onsite or remotely.
Other NBN connection types
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