DIR-878 rev A1
AC1900 MU-MIMO Wi-Fi Gigabit Router

The D-Link DIR-878 rev A1 router has Gigabit WiFi, 4 N/A ETH-ports and 0 USB-ports. It has a total combined WiFi throughput of 1900 Mpbs.
It is also known as the D-Link AC1900 MU-MIMO Wi-Fi Gigabit Router.

DIR-878 rev A1 router specifications (specs)

D-Link DIR-878 review (quick overview)

Here is the quick comparison of how the D-Link DIR-878 compares to other routers on our site:

Hard reset instructions for D-Link DIR-878 rev A1

If your DIR-878 rev A1 router is not working as it should, dropping connections or not being responsive, you should first do a reset of the router to see if the problems persist. Other scenarios where you might want to reset your router is if you've forgotten the password or misconfigured it and can't get access anymore.
Your can reset your D-Link DIR-878 rev A1 in the following way(s):

With the reset button

1. Locate the reset button on the back off the router
2. While the unit is powered on, press the reset button with a sharp object (e.g. paperclip)
3. Hold the button pressed for 10 seconds, then release.
4. The unit will reboot by itself and once the WLAN light stops blinking the factory reset is done.
5. You can now setup your router again through the user interface

The 30-30-30 reset

1. When router is powered on, press the reset button and hold for 30 seconds. (Use a paper clip or something sharp)
2. While holding the reset button pressed, unplug the power of the router and hold the reset button for 30 seconds
3. While still holding the reset button down, turn on the power to the unit again and hold for another 30 seconds.

This process usually works for resetting any router to it's factory setting. If that doesn't work be sure to check out the questions and answers incase someone else has had similar problems resetting their router.

Note: It is worth reading more about how to reset routers with the 30 30 30 reset and what the risks and considerations are when resetting your router this way, instead of just rebooting it.

Default factory settings for D-Link DIR-878 rev A1

How to login to the DIR-878 rev A1

To login to the AC1900 MU-MIMO Wi-Fi Gigabit Router and change the settings, you can follow these steps:

1. Make sure you are connected to the router's network, either by Wi-Fi or ethernet cable.
2. Open your browser and visit http://192.168.0.1
3. You should be prompted with a login dialogue.
4. Enter the username: Admin and if it requires a password, leave it empty or try with admin/password
   Note: If you have already changed the password use that instead.
5. You will now be logged in. If you haven't yet changed the defaul password, we recommend that you change it first thing you do after logging in.

If these instructions don't work for your router, you can always try a factory reset to get the default, or try some other common D-Link credentials, as they can usually be shared across models/variants.

DIR-878 rev A1 Firmwares

Staying up to date with the latest firmware is a good idea to keep your router even more secure from various security flaws.
If you want to squeeze a little bit of extra functionality out of your router, consider flashing an open-source firmware like dd-wrt, openWRT or LEDE. Flashing a custom ROM can greatly increase the stability and functionality of your old router.
Following are the firmwares that we have identified existing for the D-Link DIR-878 rev A1:

Flashing OpenWrt on the D-Link DIR-878 rev A1

The D-Link DIR-878 rev A1 is supported by OpenWrt according to their Table of Hardware. So flashing OpenWrt onto it should be quite straigthforward.
We couldn't find any specific instructions for flashin OpenWrt on the D-Link DIR-878 rev A1, but since it's listed in their Table of Hardware as supported, you can head over to the OpenWrt install instructions and read on there.
Note: Flashing custom firmwares is always on you're on own risk. Make sure to read OpenWrt's wikis to understand the risks and how to proceed if something goes wrong.

D-Link stock firmware for the DIR-878 rev A1

Stock firmwares for the DIR-878 rev A1 are available under the download section on the modem's support page. You can also refer to the router's manual for instructions on how to upgrade the firmware.

Similar routers

C7100V

AC1200R

TG3452

G10

TG3442

4G-AC55U