Yes, you can connect two routers to one modem, but the setup depends on what you want them to do
You can physically plug a second router into your modem, but whether it works well depends on your goal. If you want both routers to broadcast the same network with the same name and password, you need them configured as access points. If you want two separate networks with different names, you configure the second router in bridge mode or leave it in router mode. The simplest setup — plugging the second router's WAN port into one of the modem's ethernet ports — works when ready but creates two distinct networks that don't talk to each other.
The modem itself doesn't care how many routers connect to it. A modem is just a translator between your internet service provider's signal and your home devices. It has a set amount of bandwidth to share, so adding a second router doesn't increase your internet speed — it only spreads the same connection across more devices and locations.
Key Takeaways
- Connecting a second router to your modem's ethernet port works when ready and creates two separate networks, each with its own name and password.
- To extend one network across both routers, configure the second router as an access point by disabling its DHCP server and connecting it to the first router via ethernet or WiFi.
- The modem's bandwidth is shared between all devices, so a second router spreads your existing speed rather than doubling it.
- Most routers default to router mode, so you must manually change settings in the second router's admin panel to use it as an access point.
- A wired connection between routers is faster and more stable than a wireless connection, but wireless works if running a cable is not practical.
Two separate networks: the plug-and-play setup
The fastest way to add a second router is to plug its WAN (internet) port into any available ethernet port on your modem. Power on the second router, wait two minutes for it to boot, and it will broadcast its own WiFi network with its own name and password. Devices can connect to either router independently. This setup requires no configuration changes and works out of the box.
The trade-off is that the two networks are completely separate. A device connected to the first router cannot easily share files or printers with a device on the second router. If you have a smart home device that needs to talk to your phone, both must be on the same network. For most people who just want WiFi coverage in a second part of the house, this separation doesn't matter — they straightforward connect their devices to whichever router is closer.
Each router gets its own admin panel. You log into the first router at 192.168.1.1 (or whatever address it displays) and the second at 192.168.0.1 or a similar address. You update passwords, change the network name, and adjust settings separately for each one. This means more work if you want to change something later, but it also means a problem with one router doesn't affect the other.
One seamless network: the access point setup
If you want both routers to broadcast the same network name and password, configure the second router as an access point. Devices will automatically connect to whichever router has the stronger signal, and they can move between routers without dropping the connection. This is the setup most people want for whole-home coverage.
To set this up, connect the second router to the first with an ethernet cable. Plug the cable into one of the first router's regular ethernet ports (not the WAN port) and into one of the second router's regular ethernet ports (also not the WAN port). Then log into the second router's admin panel — usually by typing its IP address into a web browser — and disable its DHCP server. This tells the second router to stop trying to manage the network and instead just pass along the signal from the first router. Set the WiFi name and password to match the first router exactly.
Once DHCP is disabled, the second router becomes an extension of the first. Devices see one network, not two. If you move from one room to another, your phone or laptop stays connected without interruption. The second router still has its own admin panel, but you rarely need to log into it after the initial setup.
Wired versus wireless connection between routers
The ethernet cable between routers is the faster, more stable option. Data travels at full speed, and interference from walls or other devices doesn't slow it down. If you can run a cable from one router to the other — through a wall, along a baseboard, or through a closet — do that first.
If running a cable is not practical, you can connect the routers wirelessly. In the second router's admin panel, look for a setting called "Wireless Bridge" or "Repeater Mode" (the exact name varies by brand). Select your first router's network name from the list and enter its password. The second router will connect to the first over WiFi and extend the network. This is slower than a wired connection because the router has to send and receive on the same frequency, cutting its effective speed roughly in half. It works fine for basic browsing and email, but streaming video or online gaming may lag.
How bandwidth is shared across two routers
Your modem has a set amount of bandwidth — the speed your internet service provider gives you. If your plan is 100 megabits per second, that 100 Mbps is split among all devices on all routers. Adding a second router does not increase this total. If ten devices are on the first router and ten on the second, they are all competing for the same 100 Mbps.
In practice, this means you notice the slowdown only when many devices are actively using the internet at once. If one person is streaming video on the first router and another is downloading files on the second, both will be slower than if they were on the same router. For most households, this is not a daily problem — most devices are idle most of the time. But if you have a large family or many smart home devices all active at once, a second router spreads the load across more physical hardware, which can help slightly with congestion.
The router itself can also be a bottleneck. Older routers or budget models may not handle as many simultaneous connections as newer ones. If you are adding a second router because the first one is dropping connections or slowing down, the problem might be the router itself, not the modem. In that case, replacing the first router with a newer model may solve the problem without needing a second one.
Checking your modem's ethernet ports
Most modems have at least one ethernet port, and many have two or three. Check the back of your modem for ports labeled "Ethernet" or "LAN". They are usually yellow or black and look like oversized phone jacks. If your modem has only one port and it is already in use, you have two options: unplug whatever is connected to it and plug in the second router instead, or use a network switch to split that one port into multiple ports.
A network switch is a small box with four to eight ethernet ports. Plug it into your modem's ethernet port, then plug both routers into the switch. The switch costs between $15 and $40 depending on the number of ports and the brand. It does not slow down your connection — it just lets you plug in more devices.
Troubleshooting a second router that won't connect
If the second router powers on but doesn't get an internet connection, check that the ethernet cable is plugged into the WAN port (usually labeled "Internet" or "WAN" in a different color). The WAN port is where the modem's signal comes in. The other ports are for devices on your local network. If you plugged the cable into a regular ethernet port by mistake, move it to the WAN port.
If the cable is in the right port and the router still has no internet, restart both the modem and the router. Unplug the modem, wait 30 seconds, plug it back in, and wait for all lights to stop blinking. Then unplug the second router, wait 30 seconds, and plug it back in. This clears temporary errors and forces both devices to renegotiate the connection. If the second router still shows no internet after five minutes, log into its admin panel and check that it is set to "DHCP" or "Automatic" mode, not "Static IP".
When a second router is not the answer
Before adding a second router, consider whether the problem is actually coverage or something else. If your WiFi is slow everywhere in the house, the issue is usually your internet speed, not your router. Run a speed test on your phone near the modem — if it shows much slower than your plan promises, contact your internet service provider. A second router won't fix that.
If WiFi is fast near the router but slow in distant rooms, a second router helps. But a WiFi extender or mesh system might be simpler. An extender is a single device that plugs into a wall outlet and rebroadcasts the first router's signal — no configuration needed. A mesh system is a set of small routers designed to work together from the start, with one admin panel for all of them. Both cost less than buying a second full-size router and are easier to set up. The downside is that extenders are slower than a second router on a wired connection, and mesh systems cost more upfront.
Frequently Asked Questions
Do I need to change my modem settings to use two routers?
No. The modem does not care how many routers connect to it. You only change settings on the routers themselves. If you are using the second router as an access point, you disable DHCP on the second router's admin panel, but the modem stays the same.
Can I use two routers on the same network if they are different brands?
Yes. As long as both routers support the same WiFi standard (like WiFi 5 or WiFi 6), they can broadcast the same network name and password. The second router does not need to match the first. However, some advanced features like seamless roaming work better when both routers are the same brand and model.
Will two routers double my internet speed?
No. Your modem provides a fixed amount of bandwidth from your internet service provider. Two routers share that same bandwidth. They do not increase the total speed, but they can distribute the load across more devices and locations, which may feel faster if one router was overloaded.
What if my second router keeps disconnecting from the first?
If you are using a wireless bridge, the connection may drop if the routers are too far apart or if there is interference. Move the second router closer to the first, or switch to a wired ethernet connection if possible. If you are using a wired connection and it still drops, try a different ethernet cable — the original may be damaged.
Can I use the second router just for WiFi and keep the first one wired?
Yes. Plug devices that need speed (like a desktop computer or game console) into the first router with ethernet cables, and use the second router for WiFi devices like phones and tablets. This gives you the best of both — wired devices get full speed, and wireless devices have better coverage.