Each switch can be different. Some have activity lights only, some have connection lights only, and others have both. You should be able to visually check the other cables plugged in and see what it appears they are to be doing. Short of making a cross-over cable and manually setting your IP address of your computer to match that of the KSU to confirm if or not the MP10a's data port is working, I have no suggestions to be honest with you. Doing that would confirm that it is or is not working, but other than that it sounds like you could be fire-walled or any number of data traffic inhibiting problems if you can't ping it and it truly is working.

When I die, I want to go peacefully in my sleep like my grandfather, not screaming and panicking like the passengers in his car.