Let me have a go at the current rules of:
In: computer hardware, computer software, or personal and home computer networking.
Out: electronic devices, media players, cell phones or smart phones or game consoles, except insofar as they interface with your computer.
I would suggest something like:
In: Computer technology and computer hardware, software, networking and auxiliary devices, but only in relation to end-users.
Out: Special-purpose electronic devices such as media players and phones, except when networked to computers or running a general-purpose operating system (such as routers or Embedded Windows).