I am building an application for the Mac called "Twisted Pair." It is a utility that sits in the status bar on a Mac, and provides similar information to what the AirPort utility shows for Wi-Fi connections, but for wired connections.
The icon needs to be used in three places:
1) On the app's page on the Mac App Store
2) On the landing page for the app itself.
3) On the Mac status bar.
I have included a sample screenshot from the Mac app store for another app, as well as a screenshot of the landing page.
I have also included a number of PNG images; most are RJ45 sockets or jacks (yes, I'm clearly not a designer).
The third requirement may be the most challenging; The icon designed for the status bar must show the user, at-a-glance, the status of the wired connection. This could be red, yellow, or green depending on the status. Or if a black-only icon is used, it must somehow visually communicate a failed connection to the end-user.
Also note that the icon used in the status bar is constrained to 19x16 pixels in size. This size constraint may make demonstrating a failed connection difficult.