Techs focussed on EMC will know “EMC USM” for its use in upgrading storage arrays like Clariion and VNX as well as disk firmwares and installing enablers, but it can be used for other purposes as well.

Gearoid Griffin, a fellow EMC Elect 2013 member, wrote a nice article about it. Go have a look, I find it very interesting!

You can find his article on https://community.emc.com/people/GearoidG/blog/2013/04/04/other-useful-features-of-usm.