ComDiag 4.0
for Windows 98/Me, 2000
XP, Vista and Windows 7
Free
Download
Download
Com1 to Com9
Com1 to Com255
Test Transmit and Recieve
Test RTS/CTS
Test DTR/DSR
Test DSR
Test RI
Detect Inactive drivers
CD Media
ComDiag Testplug
Make your own
Make your own
Switch Location and Currency
Free
$30.oo
If you choose one of the 'paid for' options you will receive a product activation code by email once your payment is completed.
