Cisco Firepower 2100 Series Deployment Guide

The Sticker on the Chassis
Firepower 1010: The serial number is on a sticker on the bottom of the device:
Firepower 1100: The serial number is on a sticker on the back of the device or on the bottom of the device:
Firepower 2100: The serial number is on a sticker on a pull-out tab on the front of the device:
Firepower Easy Deployment Guide for Cisco Firepower 1000 or 2100 Firewalls
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Firepower Easy Deployment Guide for Cisco Firepower 1000 or 2100 Firewalls
Find Your Device's Serial Number

Cisco Firepower 2100 Series Specifications

General

Brand	Cisco
Model	Firepower 2100 Series
Category	Firewall
Language	English