With IPHost Network Monitor you can run simple snmp requests against a HP device in your network.
scanner-accessory-serial-number
scanner-accessory-serial-number
1.3.6.1.4.1.11.2.3.9.4.2.1.2.2.1.18
Identifies the serial number for the scanner accessory. If this is a writable object, the POS should indicate the maximum supported string length. This string should only use characters from the US-ASCII code set. Additional information: The serial number is 5 digit decimal number.
Back to 8100 MIB page.
IPHost Network monitor allows you to monitor scanner-accessory-serial-number on Hewlett Packard device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.