Midco ARRIS DG3450 User manual

Modem
Self-Install Guide
Use this guide for easy steps to get online.
Prefer to follow along on your mobile device?
Go to Midco.com/Setup.
ARRIS DG3450 Wireless Modem

Let’s
Get You
Connected
MODEM SELF-INSTALL GUIDE

3
Go to the next page.
Plug In Your Modem
1. Find the best location for your modem. It’s best to place
it in a central spot in your home, o the floor and near
an active cable outlet. (Some cable outlets in your home
may not be active.)
Tip: If you’re installing your modem in a hard-to-access spot,
take a picture of the white label on the bottom of the modem,
so you can easily reference the default Wi-Fi network and
password later.
2. Connect the coax cable from the wall outlet to the
connection on your modem.
3. Plug your modem into a power outlet.
Make sure all connections are finger tight.
Online light isn’t on or still flashing
after 15 minutes?
Here are a couple of quick things to check:
1. Make sure you’re using the coax cable we shipped to you
and that the connections are finger tight.
2. When you first plug into power, the Online light should
appear blue before it changes to steady green. If it didn’t
appear blue initially, try a dierent power outlet.
3. If the Online light doesn’t light up, or if the light is solid
but it’s still not connecting, reboot the modem. Unplug it
from power, wait 30 seconds and plug it back in.
Still not working? Go to page 6 for troubleshooting steps.
Wait for the Light
Wait up to 15 minutes for the Online light (shown here)
to go from blue to a steady green.

MODEM SELF-INSTALL GUIDE
What’s next?
4
Connect Your Devices
With one device (such as a smartphone), go to Wi-Fi settings and connect to
the default network. (Choose the 5G network if it appears, and make sure you’re
not using mobile data.) Follow the steps on page 5 to connect to Wi-Fi. Open a
website to make sure it loads.
Want to customize your Wi-Fi network? It’s optional, but it’s best to do it
before connecting more devices. Type 192.168.0.1 into your web browser. On
the Arris page, create and enter a new password. (Important: This isn’t your
Wi-Fi password. It’s to access to your modem’s settings.) Select Next Step.
For both the 2.4GHz and 5 GHz networks, create your new Wi-Fi network name
and password. Your passwords can be the same. Be sure to add 5G at the end
of that network name. After you save changes, the modem will automatically
disconnect from the previous network. Follow the steps on page 5 to connect
the first and other devices to your new Wi-Fi network. (Make sure you’re not
using mobile data.)
Take Note of Your Wi-Fi Network
On the bottom of your modem, find these settings for your own equipment.
Network Name (SSID) (This is your default network name.)
Note: There are two of them – one for a 2.4GHz signal and one for a 5GHz signal.
You’ll need to know both since the ARRIS modem broadcasts two Wi-Fi signals.
Preshared Key (This is your default wireless password.)
This example is not your modem’s
default network name or password.
ARRIS
®
Network Name (SSID)
2.4GHz: ARRIS – XXXX
5GHz: ARRIS – XXXX – 5G
Preshared Key:
XXXXXXXXXXXX
Go to the next page.

Have a dierent device?
Visit Midco.com/WiFiSupport for instructions. If you want a wired connection,
plug the Ethernet cord into your modem and the device (such as a gaming
system or desktop computer).
You’re all set!
If you’re having trouble, go to the next page for help.
iPhone and iPad
1. Go to the Settings app, and then
tap Wi-Fi.
2. Confirm Wi-Fi is set to on. When
Wi-Fi is enabled, you’ll see a list
of available Wi-Fi networks.
3. Tap your Wi-Fi network name.
4. Enter your Wi-Fi password.
Tap Join.
You’ll know you’re connected when
there’s a checkmark next to your
Wi-Fi network name and a Wi-Fi
symbol at the top of your screen.
Android Devices
1. Tap the Apps icon.
2. Tap Settings, and then select Wi-Fi.
3. Tap your Wi-Fi network name.
4. Enter your Wi-Fi password.
Tap Connect.
You’ll know you’re connected when
your Wi-Fi network name shows
Connected.
Windows Computer
1. Click the wireless network icon
(near the clock on your screen).
2. Select your Wi-Fi network name.
Click Connect.
3. Enter your Wi-Fi password.
Click Next or OK to confirm your
password.
You’ll know you’re connected when
you hover over the wireless network
icon, and it shows Connected.
Apple Computer
1. Click the wireless icon. Confirm
Wi-Fi is set to on.
2. Select your Wi-Fi network name.
3. Enter your Wi-Fi password.
Click OK.
You’ll know you’re connected when
the Airport list displays a checkmark
next to your Wi-Fi network name
and there’s a Wi-Fi symbol at the
top of your screen.
5
Don’t want to customize your network? When connecting, make sure you’re
using your modem’s Wi-Fi network, not mobile data.

6
Online light
is flashing
one color.
Online light
is alternating
between blue
and green.
Reset button
STEP 1
Try a dierent cable outlet.
Not all cable outlets are active. The easiest thing to do is
move your modem to another location and plug the coax
into a dierent outlet.
STEP 1: MODEM UPDATE
Wait for your modem to update.
Like all hardware, your modem sometimes needs an update
(even if it’s new). This can take up to 60 minutes, so feel free
to check back in a bit.
When the update is done, both lights will show solid green.
If the online light is still blinking after 60 minutes, reboot
your modem. Unplug it from power, wait 30 seconds and
plug it back in. Then, give it up to 60 minutes for a complete
reboot and update.
When the light shows solid green, it’s complete and time for
you to go to the Take Note of Your Wi-Fi Network steps on
page 4.
STEP 2 (IF YOU’RE STILL HAVING ISSUES)
Perform a factory reset.
If you’ve tried everything else and the online light is still
blinking, then it’s time to try a factory reset.
With your modem still powered on, press and hold the Reset
button – found on the back of the modem – for 10 seconds.
(You need a pen or paper clip to push it.) Once the online
light is solid green, go to the Take Note of Your Wi-Fi
Network steps on page 4.
If this doesn’t work, please call support at 1.800.888.1300
or text 64326.
STEP 2
Wait 10 minutes to see if it connects.
If the lights turn solid green,go to the Take Note of Your
Wi-Fi Network steps on page 4. If you’ve tried multiple
outlets and still can’t connect, call support at 1.800.888.1300
or text 64326.
Troubleshooting: Look at Modem Lights

7
Wi-Fi Network Name:
Wi-Fi Network Password:
Note: If you change your Wi-Fi network name or password, your equipment will
no longer be paired to your system.
Additional Resources
Check out Midco.com/InternetSupport for a variety of resources. Learn how
Wi-Fi works, how to reboot your modem, how to avoid interference and more.
Return Old Modem
If we mailed you a new modem and you have an old one from Midco, it will
remain active up to 14 days. If you leased it from us, be sure to return it. Just
package it up in the box that came with your new modem. You can either use the
enclosed, prepaid return label – or drop the box o at your local Midco Customer
Experience Center.
This material includes references to products, services and/or equipment not manufactured by Midco.
The respective companies retain trademark and registered trademark ownership for those referenced items.

© 2020 Midcontinent Communications. All rights reserved. Updated May 2020.
Need help?
Setup Guide
Midco.com/Setup
Online Support
Midco.com/Support
Contact
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Phone: [phone]
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