Use only if:
Includes support for Cisco TrustSec, advanced Access Control Lists (ACLs), and secure management protocols. C3560-ipservicesk9-mz.150-2.se11.bin
: This indicates where the file runs and its compression format. "m" means it runs from RAM, and "z" means the file is zip-compressed. 150-2.SE11 : This is the specific IOS version. 15.0(2) is the major release train. Use only if: Includes support for Cisco TrustSec,