Hello!  I hope you are having a great week.

I just wanted to let you know that the upstairs printer (the old one) does not work from my computer downstair or the Dell upstairs..  I guess I should have tried to print while you were here. The ethernet light is blinking, and the report says it is offline.  Is there an easy fix for that?

Thanks so much!

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The older printer was connected to the time capsule upstairs via USB.  To add to your own computer, you will first want to make sure you have the most current driver for that printer on both computers.  Available at HP.com.  Next, you should be able to find the printer on the mac via your system prefs.  To have the older Dell be able to print to it, you'll need to download a free piece of software provided by apple called "bonjour for windows".  Then you should be able to locate the printer from the Dell.  It's a bit of a pain but usually works provided you have the correct printer drivers installed.  That's usually the problem.
Bonjour Print Services for Windows