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I have a raspberry Pi 4 with raspbian, and I just booted it and connected it to ethernet. My Router does not detect the pi, so I cant ssh into it. I tried 2 different SD cards, and they both will boot on my Pi 0.

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  • Replace the cable between your RPi & your router with a known good cable.
    – Dougie
    Dec 1 '19 at 21:57
  • You need access to an HDMI screen and a computer keyboard.
    – goldilocks
    Dec 1 '19 at 22:13
  • Is this a fresh install on the card, or an old one you used with the Pi Zero? Also what version of Raspbian are you using? You need to be using Buster to support the Pi 4
    – hardillb
    Dec 2 '19 at 9:40
  • How do you know you have booted, do you have a screen/terminal attached? If this is the case, please post the output of ifconfig and ip route list. Dec 2 '19 at 10:03
  • Have you used a network scanner to find ip addresses on your network?
    – Ingo
    Dec 2 '19 at 23:20
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Raspberry Pi 4 does not connect over the ethernet port with just any cable.
To connect mine to the network I had to use a Gigabit cable, only then the LEDs turned on and the Pi connected.

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FredTheDoggy.

As you're trying to SSH, I'm assuming you don't have a monitor. If you have one, then please share the result of ifconfig with us.

You've to keep these things in mind before connecting your RPi:

  1. Make sure you're using a standard cat5/cat6 cable with an RJ45 connector, and it's not broken.
  2. You should have a clean installation of Raspberry Pi OS Buster on your card, and it shouldn't be used on any other old Raspberry Pis. If you're not using a clean installation, then please reinstall the OS and try again.
  3. Make sure that you're connecting the ethernet cable to the correct port on your router.

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