2) You will also need an old USB-plug (Female, Type A). I used two from USB-extender-cables and the rest from female-USB-connectors that i directly ordered in a shop.
3) you will also need something as thick as 1 mm. This can be wood, plastic or the latest flyers you collected by going out at the weekend. We used a Eurocard which we broke in Pieces (4 rows * 9 holes)
What to check first
Open the dongle in the middle of the cable to check if the profilic chip is used. You need to check the color coding of the wires. Best would be to just leave the dongle open. In my example here we have the color coding for the FutureDial-Cables. If you have a different one check http://www.nslu2-linux.org/wiki/HowTo/AddASerialPort for the color coding.
Open the phone connector of the cable
you can slide out all the cables ends out of the connector. Use flat nose pliers.
Prepare the USB-Plug
Indifferent which way you use, you will have to make the usb-plastik part a little smaller....you also will have to get rid of all parts so that it looks like the next picture.
If you are using one from an extender cable
Best would be to use a grinder. Do not hesitate to destroy the cables. It is recommended to remove everything so that you can solder the cables from the phonesync-cable directly to the pins.
If you have bought the part directly
Just open the metal-case and use a grinder to make it look like the picture above. You won`t have to remove any glue or cables.
Prepare the phone sync cable
Solder the phone sync cable to the USB-plug
You will have both read and write access if you solder it that way.
In this picture: Green is GND, Yellow is RX (as in "data entering the LSPro") and Orange is TX (as in "data coming from the LSPro"). The not connected terminal is VCC.
Checking the cable/plug
Best with a Voltmeter. To go completely safe test from the pins for the yellow + orange cables on top of the profilic chip. The green one + shield can be tested from the pin on the other side.
You need a Windows driver for the Prolific USB-to-Serial adaptor, available at the Prolific Technology Inc Support Site.
The cable will show up as COM4.
Plug the USB connector into your Linux box. Start minicom and set the port to /dev/ttyUSB0 115200 8N1. Power up and you will see a '+' printed.
Cable is confirmed to work...here, hyperterminal is used in WinXp