I was going to write a clever little entry explaining this idea, but I think the image pretty much does a better job. They should totally label the connector end of the cable so you A) don't unplug the wrong cable and B) know what that the cable is for, years after the gadget is long gone. Also, for devices that use generic cables like AV equipment, or printers the manufacturer should include adhesive labels with the product name that the user can stick to cable. Lastly, some one (or some company) could print up adhesive labels with the names of common devices (iPod, keyboard, mouse, TV, VCR, DVD) that the user can just stick on the cable or plug. However, while most people would probably find it useful, they probably wouldn't be willing to pay for the labels.