Group: Hardware/Computers/Printers

Research

HP MFP M725z

Vendor: HP

Product: MFP M725z

Reference: Printing-Shellz.pdf

Short summary: Runs GNU/Linux in a scanner board only.

Details

Page 8 we can see the hardware and software architecture:

+-------------------+               +-----------------+
| Scanner board     |               | Printer board   |
| running GNU/Linux |<---->[+]<---->| running an RTOS |
+-------------------+       ^       +-----------------+
                            |
+---------------------+     |
| Communication board |-----+
| running Windows CE  |
| - 4 USB host        |
| - 4 USB devices     |
| - Ethernet 1000     |
| - Touchscreen       |
| - Fax board         |
+---------------------+

It's unknown if HaRET works on that version of Windows CE.

I also didn't look at the CPU architectures or more details since GNU/Linux only runs on the scanner board.