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 * I2C IO bus expansion board with the PCF8574* I2C IO expander ASIC.
 * ShiftRegister adaptor board as described [[http://code.google.com/p/arduinoshiftreglcd/|Shift Register project home]] - Not tested yet.
 
-The code has been fully tested with 4 bit interface and with the **I2CLCDextraIO** (companion board to this library) using the PCF8574* ASIC.
+The code has been fully tested with 4 bit interface and with the [[http://www.electrofunltd.com/p/i2c-lcd-extra-io.html|**I2CLCDextraIO**]] (companion board to this library) using the PCF8574* ASIC.
 
 The library is also very easy to customize for different I2C IO expansion boards using different 
 I2C expander ASICs.
 
 //The library has been developed to replace the current Arduino library, therefore you will need to remove from the Arduino library folder the original LiquidCrystal library and replace it for this one.//
 
-Also in the download section you can find the [[I2CIO|I2CIO driver library]] for the PCF8574* I2C IO expander ASIC. The library has been tested with the **LCDI2CextraIO** board. 
+Also in the download section you can find the [[I2CIO|I2CIO driver library]] for the PCF8574* I2C IO expander ASIC. The library has been tested with the [[http://www.electrofunltd.com/p/i2c-lcd-extra-io.html|**LCDI2CextraIO**]] board. 
 
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