(This isn't really server-related, but it seems more appropriate here than SO or SU.)
When we had this house built, we had network cabling run inside the house, or so I'm lead to believe. It's currently hooked up to the phone line.
Unfortunately, the builder/electrician did not say what type of cabling it was. So, is there any way to tell physically (i.e. from the properties of the cable, or the connector) what type of cable it is (Cat 5, 5e or unlikely 6)?
Picture here: http://www.flickr.com/photos/rmccue/4082179025/