https://www.cisco.com/c/en/us/td/docs/IIOT/switches/ie35xx/sw-config-guide/17-18/b_ie3500_1718-cg.html
Cisco IE3500 Series Switch Software Configuration Guide, Cisco IOS XE 17.18.x - Cisco
Cisco IE3500 Series Switch Software Configuration Guide, Cisco IOS XE 17.18.x
software configuration
https://www.cisco.com/c/en/us/td/docs/switches/lan/ie3500/software/26-x/release-notes/26-1-x-rn-ie3500.html
Release Notes for Cisco IE3500 Series Switches, Release 26.1.x - Cisco
Release Notes for Cisco IE3500 Series Switches, Release 26.1.x
release notesciscoseriesswitchesx