UTOPIA, Google Fiber, and municipal fiber are expanding rapidly along the Wasatch Front. If you live in Lehi, Saratoga Springs, Herriman, South Jordan, or most of Utah County, there’s a good chance fiber is either already available or coming within the next year or two.
The marketing makes it sound simple: fiber gets installed, you get fast internet. But the reality is that most homes built before 2020 — and many built after — can’t actually use multi-gigabit fiber without upgrades inside the house. The fiber terminates at your wall. Everything after that is your problem.
How fiber delivery works
The fiber provider installs an ONT (Optical Network Terminal) somewhere on or in your home. This is the box that converts the fiber optic signal into an Ethernet signal your router can understand.
UTOPIA typically places the ONT on an exterior wall or in the garage. Google Fiber usually installs theirs in a utility area inside the home. Either way, the ONT has an Ethernet port (sometimes 1 Gbps, increasingly 2.5 or 10 Gbps on newer installs) that connects to your router.
Everything downstream of that Ethernet port — your router, your switch, your cables, your access points — determines whether you actually get the speed you’re paying for.
The router bottleneck
This is the most common issue. You sign up for 2 Gbps or 5 Gbps fiber, the ONT delivers it, and then your router can only handle 1 Gbps because it has a gigabit WAN port.
Most consumer routers — including expensive ones from Asus, Netgear, and TP-Link — have gigabit Ethernet ports. A gigabit port physically cannot pass more than 940 Mbps of real-world throughput. If your fiber plan is faster than 1 Gbps, you need a router with a 2.5G or 10G WAN port.
Routers that support multi-gig WAN
- UniFi Dream Machine SE / Cloud Gateway Ultra: 2.5G WAN port. Handles up to ~2.3 Gbps routed throughput with IDS/IPS enabled. This is what we install most often.
- UniFi Dream Machine Pro Max: 10G SFP+ WAN. For 5+ Gbps plans or future-proofing.
- Firewalla Purple / Gold Pro: 2.5G ports. Good prosumer option if you’re not on UniFi.
- pfSense / OPNsense on PC hardware: Whatever NIC you install. Flexible but requires technical knowledge.
If you’re on a standard 1 Gbps fiber plan, your existing router is probably fine. The multi-gig requirement kicks in at 1.5 Gbps and above.
The internal wiring problem
Even if your router can handle 2+ Gbps from the ONT, the cables inside your walls determine what each device actually gets. This is where most homes fall short.
Cat5e
Supports up to 1 Gbps. If your home was wired between 2000 and 2015, it probably has Cat5e. This is fine for a 1 Gbps fiber plan but cannot carry anything faster. You won’t get 2.5 Gbps to a device on Cat5e cable no matter what equipment is on either end.
(Technically Cat5e can sometimes negotiate 2.5GBASE-T over short runs under 50 meters, but it’s not rated for it and reliability varies by cable quality and run length. Don’t count on it.)
Cat6
Supports up to 1 Gbps at 100 meters, and can handle 10 Gbps at runs under 55 meters. For most residential cable runs (which are typically 15–40 meters), Cat6 will carry 10 Gbps just fine. This is the sweet spot for homes getting fiber today.
Cat6A
Supports 10 Gbps at the full 100-meter distance. Thicker, harder to terminate, more expensive. Necessary for long commercial runs but usually overkill in a residential setting where runs are short. We install Cat6A in new construction when the budget allows, but Cat6 is perfectly adequate for almost every home.
What this means practically
If your home has Cat5e and you sign up for 2 Gbps fiber:
- Your router gets 2 Gbps from the ONT (assuming a 2.5G WAN port)
- Your Wi-Fi devices share that bandwidth wirelessly (Wi-Fi 6E and Wi-Fi 7 can deliver 1–2 Gbps per device in ideal conditions)
- Your wired devices are limited to 1 Gbps each by the Cat5e cable and gigabit switch ports
For most households, this is actually fine. Very few single devices need more than 1 Gbps. The benefit of multi-gig fiber is aggregate bandwidth — multiple people streaming, downloading, and video-calling simultaneously without contention. You don’t necessarily need 2.5G to every desk.
The switch layer
If you have a network switch (which you do if you have more than a few wired devices), it needs to support the speeds you’re trying to deliver. A gigabit switch maxes out at 1 Gbps per port. If you want 2.5G to specific devices (a NAS, a workstation, the NVR), you need a switch with 2.5G or 10G ports — at least on the uplink to the router and on the ports serving those devices.
UniFi makes several switches with mixed 1G/2.5G/10G ports that fit neatly into a home rack. You don’t need every port to be multi-gig — just the ones that matter.
ONT placement matters
Where the fiber company puts the ONT affects your entire network topology. Ideally, the ONT should be near your network rack or router location. If the ONT is on the opposite side of the house from your rack, you need a cable run between them — and that cable needs to be Cat6 or better if you want multi-gig.
When UTOPIA or Google Fiber contacts you to schedule installation, ask where they plan to place the ONT. If you have a preference (garage, basement utility room, network closet), tell them. Most installers are accommodating if you ask before they drill.
The prep checklist
Before fiber is installed, or right after if it’s already there and you’re not getting the speed you expected:
- Check your router’s WAN port speed. If it’s gigabit and your plan is faster, the router is the bottleneck.
- Check what cable is in your walls. Look at the jacket printing. It will say Cat5e, Cat6, or Cat6A. If it’s Cat5e and you want multi-gig to wired devices, re-cabling those runs is the fix.
- Check your switch. If it’s gigabit-only and you want faster wired speeds, a multi-gig switch (even just for the uplink) is the upgrade.
- Plan the ONT location. Talk to your fiber provider before installation. Get the ONT near your router/rack if possible.
- Check your Wi-Fi generation. Wi-Fi 5 (802.11ac) maxes out around 400–800 Mbps real-world per device. Wi-Fi 6E or Wi-Fi 7 APs are needed to deliver 1+ Gbps wirelessly.
What most homes actually need
Here’s the honest take: for a typical Utah family with phones, laptops, streaming TVs, and smart home devices — a 1 Gbps fiber plan with a good router and properly placed APs is more than enough. The constraint is almost never the fiber; it’s the Wi-Fi and internal wiring.
Upgrading to 2+ Gbps fiber makes sense if you have a NAS, work from home with large file transfers, run a home lab, or have 5+ people streaming simultaneously. For everyone else, spending that budget on better internal Wi-Fi and wired backhaul will improve your experience more than a faster fiber plan.
Bottom line
Fiber to the home is great, but the fiber is only as useful as the network behind it. A multi-gig fiber plan on a gigabit router with Cat5e wiring and Wi-Fi 5 APs will feel exactly like a 1 Gbps plan. If you’re upgrading your internet, audit your internal network at the same time — ONT placement, router WAN port, cable category, switch ports, and AP generation.
Keystone Integration helps homeowners across Lehi, Saratoga Springs, and Utah County prepare for fiber — from ONT-to-rack cabling and multi-gig switch upgrades to full structured-cabling retrofits. Check out our full service list or reach out for a network assessment.