How To Self-Install Optimum Internet and Modem (2023)

Has your Optimum membership been activated recently? Do you think paying a professional to put in your new appliance is a bit steep?

The same way, indeed. As I did, you can save yourself $100–$150 by installing Optimum Internet. Optimum self-install takes less than an hour and doesn’t require any prior knowledge of networks.

How to activate an Optimum modem is explained in this article. In addition, you will need to buy an Optimum-compatible modem and register it with your ISP if you intend to return the ISP-provided equipment and avoid the monthly rental fees. That shouldn’t be too difficult, as I will discuss them here.

Optimum Modem


Table of Contents

How to Self Install Optimum Internet Via a Cable Modem

Step 1: Connect Your Optimum Modem to Coaxial Wall Outlet

You must locate the coaxial outlet if your property already has a coaxial cable system. Your large home likely has more than one electrical socket. Pick one that’s conveniently located, and make sure there’s easy access to power I/O nearby.

Connect one end of the included coaxial cable to the outlet. Pull the plug on any sloppy connections and tighten the screws.

  1. The modem is the destination for the opposite end of the coaxial connection.
  2. Use a coax splitter to share an Internet and TV connection.
  3. Plug one end of the coaxial cable into the wall outlet. One of the two outputs will connect to your modem, while the other will go to your set-top box for your television.

Note: If you don’t have a coaxial outlet, then there are other options. Please see our article: Do You Need a Coax Cable For Internet?


Step 2: Connect Your Modem to a WiFi Router

Wireless connectivity is possible after you do the optimum router setup and optimum modem setup. A label on the router’s rear displays the network’s name and password.

The default SSID and password on most routers is a long string of characters, making it hard to identify your home network and remember your password.

You can make the necessary changes when you log in to your router. If you care about your privacy, don’t use a simple password. Here’s a step-by-step guide that you should follow:

  1. Turn it on and connect the modem to the router’s WAN port using an Ethernet connection.
  2. Login with your Optimum ID and password at to access and configure your Optimum router. Further, the ID may not be available if you use your own Optimum router. Accordingly, creating an account is a prerequisite to creating a custom WiFi network name and password.


Step 3: Activate the Modem Online

It’s easy to activate a modem. Turn on all the gadgets once you’ve connected their power cords. You can activate Optimum once you’ve confirmed that both the US/DS and Internet lights are on and that your connection is stable.

  1. Connect your computer or laptop directly to the Kit via the Ethernet wire.
  2. To access this webpage, launch a web browser on the laptop and go to
  3. Type in your information, including your Last Name and Identified Phone Number. You can locate your Account number on your invoice, subscription voucher, or DIY installation package. Fill out the fields and proceed. The installation wizard will lead you step-by-step through the process. It could take anything from 10 to 15 minutes to finish the process.


Step 4: Test the Internet

  1. Launch your device’s internet browser, locate your WiFi identifier, and log in using the associated password.
  2. After the mobile device has been linked, you may verify the quality of the connection by running a speed test at


Optimum Internet Not Working – What to Do?

Are you having trouble with the optimum internet and don’t know what you can do to get rid of it? Here are some steps you need to follow to ensure the perfect connection.

How to Overcome Slow Internet Speed

  • Use an Ethernet Cable
  • Remove Unwelcome Guests
  • Disconnect Extra Devices
  • Reset your Modem
  • Reset your Device
  • Choose the Perfect Location for Router
  • Update your Devices
  • Check Interference from other APNs
  • Choose a better modem. Please read Do Modems Affect Internet Speed? to see what factors come into play when choosing a modem.

How to Reset Your Optimum Modem

  • Connect your modem’s power adapter to the adapter, and then plug the adapter into an electrical outlet.
  • You’ll be able to find the modem’s Reset button underneath the panel housing the various connections on the rear of the device.
  • To reset the device, use a paperclip or toothpick to press and hold the button for 30 seconds.
  • If you hold the reset button for 30 seconds, your modem will power cycle and reset in 5 minutes.

How to Fix No WiFi Signals Issue

  • Please take 15 seconds to reboot your router and modem by removing their power cables from the wall.
  • Get the power plugs back in.
  • Make sure the ends of all cords and cables are properly fastened.
  • Hold off until the router and modem’s status lights are solid. (Refer to the product’s documentation or manufacturer’s help page.

Optimum Modems are often made by Arris, so you can check what the Arris modem lights mean if they are flashing.

If Nothing Works, Call the Support for Help

By now, you will have a good WiFi connection without any problems. However, if you find any more problems after trying everything, I suggest you contact Optimum support to assist you further.


Optimum Self Installation FAQ

Q1. Is there a way to self-install my optimum modem?

Ans: To begin setting up your new modem, attach the open end of the coaxial wire to the device’s rear. Connect the power cord to your modem via the port on the back of the modem, and then plug the other end of the cord into a wall outlet.

You’ll need to watch the ‘Online’ indicator light on the modem change from blinking to solid before you can connect to the internet.

Q2. Should I buy my modem for optimum?

Ans: With Optimum Internet, a modem and router are not required. If you live in a cable internet service region, you can rent an Optimum Gateway 6 modem for $10 per month.

Q3. Can I use my own modem instead of the optimum one?

Ans: You can use your cable modem instead of the one provided by Optimum if you already have cable internet in your neighborhood. If you choose a Spectrum modem, we have a handy article on what to do if your Spectrum Modem Red Light is on.



The optimum self install methods in these articles are the simplest methods you can use to self-install optimum internet. By following these, you will not have any problems.

I hope now you know how to self-install optimum internet. For more informative articles, stay tuned!