On 9/1/2013 8:37 PM, Kennet4723 at aol.com wrote: > Both have real serial ports. Laptop # 1 does not recognize the KX3. but will recognize my K3. Laptop # 2 will recognize both my KX3 and my K3 Check that the software on both computers agrees with both radios for port speed. 73, Jim K9YC