serial cable analog (original DKU-5 is an USB cable with complicated schematic).
Rx is at Nokia pop-port pin 6
Tx is at Nokia pop-port pin 7
GND is at Nokia pop-port pin 8

check http://www.ftdichip.com for usb port converter drivers
Rx is at Nokia pop-port pin 6
Tx is at Nokia pop-port pin 7
GND is at Nokia pop-port pin 8
