If you are maintaining a legacy network with this image, consider these migration paths:
: Allows IT managers to measure and manage the power consumption of devices connected to the switch. Enhanced Security
license install flash:FLS-SEC-K9-<your-udi>.lic reload show license
Hold button on the front panel while powering on → Release after 2-3 seconds (when LED blinks green). This enters ROMmon mode:
Unlike the "LAN Base" images on newer low-end switches, the Universal image on the 3750-E allows full Layer 3 capabilities:
The naming convention of Cisco IOS files provides specific details about the software version and its capabilities: