The Main Cable Features:

• Connectible to PC COM port of 25 pins DSUB connector:
  - This connector include the electronics, which stand the spark arise from electrostatic charge (e.g. You work in synthetic fibre sweater or pullover), because not include IC (Integraded Circuit), than cable of other manufacturer. This electronic circuit convert the level of signal from one unit to another.
  - The supply voltage get in PC, battery not necessary to electronics, and spare the unit battery.
  - Optional the 25/9 pins converter if only 9 pins connector exists on PC.
  
• The cable connect to Casio^® calculators with special 2.5mm Jack plug:
  The shell of special 2.5mm Jack plug thin, 7 mm diameter, that can be connected the calculator. The connecting part of plug special form, correspond with original Casio^® connector, that can be connect to scientific calculators. (The Casio^® calculator socket not standard 2.5mm Jack, that cannot connect the commercial Jack plug to scientific calculators.)
• This cable can be used by any CASIO^® scientific calculator link software.
• This cable can be used by any FX, CFX calculator, which include the 2.5 Jack stocket.
• This cable compatible with SB-87 cable.

How can you make a link cable between PC and CASIO for $4 USD:

Link cable construction page... <= Click to here and build your cable
(with 2.5mm Jack)

Link cable's schematics, circuit diagrams Printed-circuit board fabrication files (Aperture, Gerber, Drill program) Parts list with pictures, Tools list, Materials list Instructions, Hints.

The sofware for this FX-Link cable:

CASIO® FA-123 link software
Programs, data and backups can be transferred between a graphic calculator and a PC.
You can create new programs, and edit programs including those downloaded from the Web on a PC.
Screen images of a graphic calculator can be transferred to a PC.

Free Download: fa123win.exe    <= Click to filename for download!

Supported unit types:
Send/Receive function:
ALGEBRA FX 2.0, CFX-9850G, CFX-9950G, fx-9750G, CFX-9970G, CFX-9850G Plus, CFX-9850Ga Plus, CFX-9850GB Plus, CFX-9950GB Plus fx-7450G, fx-7400G Plus
Only CASIO->PC receive function:
fx-7700GB, fx-8700GB, fx-7700GE, fx-7700GH, fx-9700GE, fx-9700GH, CFX-9800G

This software may be supports other unit types, try the communication be needed.

If you have any question, you can send E-Mail message in English to the ddlink@freemail.hu address.