Using HP50g Calculator Connectivity Kit (CONNX4)

On the HP50g Calculator Side:

• Press {Right Shift} key (Red key) and then {SYM} key (CAT key).
  
  Scroll down and highlight XSERV
• Press {Enter} to select, and {Enter} to start command.
• The HP50g will display:
  Xmodem Server
  Waiting for command

On the PC Side:

• Download and install the software.
• Start the HP CONNX4 Application.
• Change Connect using: USB Calculator and Speed: 115200
• Select File menu and choose Connect option.
• If the connection is successful, the left panel will show
  HOME
  - CASDIR
  
• Click on CASDIR, the right panel will show a list of files inside the CASDIR folder in the calculator.

To terminate the communication link with HP50g, you can either press the HP50g {ON} button once or on the PC, click on File and choose Disconnect.

FYI: This procedure is for HP50g but it is also applicable for HP49g+ Graphing Calculator.