Internet backup used to be a project. Ubiquiti just made it an accessory. The U5G is a slim 5G RedCap antenna that plugs into any UniFi PoE port, sits on a desk or sticks to a window, and gives your gateway an automatic cellular failover path — SIM or eSIM. In Australia, UniFi cellular devices are supplied by ARC IP Networks, an authorised Ubiquiti reseller — genuine stock, full manufacturer warranty.
What is the U5G?
A 200 mm wand with a status display, a GbE port and a 5G RedCap modem inside. One PoE cable from a UniFi switch powers it; your UniFi gateway treats it as a backup WAN. When the fixed line fails, traffic fails over automatically — and fails back when service returns. RedCap keeps it small, cool and PoE-friendly, because a failover link doesn't need multi-gigabit 5G; it needs to be there.
Who needs it
Full specifications
U5G or U5G Max?
Set-and-forget failover for any site.
Primary cellular or demanding backup — in stock at ARC IP now.
Availability in Australia
The U5G is now available in Australia. ARC IP Networks — an authorised Ubiquiti reseller in Australia — supplies UniFi cellular devices as genuine Australian stock with the full manufacturer warranty, claimable locally; the U5G Max and Max Outdoor are available today. Installers and MSPs can open a trade account, and our price match policy applies.
Frequently asked questions
What is the UniFi U5G?
The UniFi U5G is a compact PoE-powered 5G RedCap antenna that plugs into any UniFi PoE port and gives your network automatic cellular internet backup — with a nano-SIM slot and eSIM, a status display, and desk, wall and window mounting included.
What is 5G RedCap and why does it matter for backup?
RedCap (reduced capability) is a lighter, more power-efficient class of 5G designed for devices that don't need multi-gigabit speeds. For a failover link that's ideal: the U5G stays PoE-powered and affordable while providing enough bandwidth to keep a site online when the fixed line drops.
How does the U5G provide internet backup?
It connects to your UniFi gateway as a WAN interface over Ethernet: when your primary NBN or fibre connection fails, the gateway fails over to the U5G's cellular link automatically, and back again when the primary returns.
What is the difference between the U5G and the U5G Max?
The U5G is a RedCap device purpose-built as a compact backup link; the U5G Max (and its outdoor version) is a full-capability 5G modem for higher-bandwidth cellular connectivity, suited to primary or high-throughput links as well as backup.
Where can I buy the UniFi U5G in Australia?
From ARC IP Networks (arcip.com.au), an authorised Ubiquiti reseller in Australia — the U5G is available as genuine Australian stock with the full manufacturer warranty, claimable locally, alongside the U5G Max and Max Outdoor for higher-throughput cellular links.