Introduction
This document describes methods to locate serial numbers for the Email Security Appliance, Security Management Appliance, and Web Security Appliance.
Locate Serial Numbers
From the GUI
For the Email Security Appliance (ESA) and Web Security Appliance (WSA), navigate to Monitor/Reporting > System Status
For the Security Management Appliance (SMA), navigate to Centralized Services > System Status

From the CLI
Use the version command.
esa.lab.local> version
Current Version
===============
Product: Cisco C100V Email Security Virtual Appliance
Model: C100V
Version: 13.0.0-392
Build Date: 2020-01-29
Install Date: 2020-04-28 04:01:27
Serial #: 564D31FC43F2BDD28977-898C3195F3F4
Physical Access (Hardware)
For hardware models (x70, x70, x80, x90, x95, etc) you see a sticker on the rear-panel that contains the serial number. In some cases, on newer models, you see a pull-tab on the front panel which can also show the serial number.

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