Submission by Seggy T Segaran
The TestNET is a handy Ethernet checker. If you have a CAT5 socket which in theory should have Ethernet, but you are not sure, you can quickly verify service, 10/100 MHz operation and whetehr duplex is supported with this product.
With the crossover cable supplied, it can easily be used for checking Network cards in PCs as well.
Check out TeleProducts