No official download exists on developer.android.com . Google removed Honeycomb factory images years ago. You are looking for community-dumped stock ROMs .
If you're looking for newer Android versions or more stable ROMs, consider: Android 3.0 Honeycomb Rom Download-
: Developers at XDA-Developers created early alpha builds to run Honeycomb on the original Nexus One. No official download exists on developer
Android 3.0 Honeycomb: A Deep Dive into the Tablet Revolution If you're looking for newer Android versions or
(easy file transfer via USB) and full Bluetooth/USB keyboard support. Android Developers 📥 ROM & Download Information
Boot into recovery (Power + Volume Up). Select "Backup." Save to external SD.
Android 3.0 Honeycomb was the experimental bridge that turned Android into a multi-screen operating system. While it was eventually merged back into the phone OS with Android 4.0 Ice Cream Sandwich, the blue-glowing DNA of Honeycomb still exists in the tablets we use today.