diff --git a/src/LED_PCA9655E.cpp b/src/LED_PCA9655E.cpp
deleted file mode 100644
index 2838783..0000000
--- a/src/LED_PCA9655E.cpp
+++ /dev/null
@@ -1,11 +0,0 @@
-#include "LED_PCA9655E.h"
-
-void LED_PCA9655E::on()
-{
-    refPort.write(pin, HIGH);
-}
-
-void LED_PCA9655E::off()
-{
-    refPort.write(pin, LOW);
-}
diff --git a/src/LED_PCA9655E.h b/src/LED_PCA9655E.h
deleted file mode 100644
index 1142dc9..0000000
--- a/src/LED_PCA9655E.h
+++ /dev/null
@@ -1,23 +0,0 @@
-#ifndef LED_PCA9655E_H
-#define LED_PCA9655E_H
-#include <Arduino.h>
-#include <inttypes.h>
-#include <Wire.h>
-#include <LED.h>
-#include <PortPCA9655E.h>
-
-/* A LED_PCA9655E object is an PCA9655E pin that is connected to an LED indicator light.
-Input/Ouput Direction configuration are set to ouput in PortPCA9655E.begin() and PortRead_PCA9655E.begin().
-*/
-class LED_PCA9655E: public LED
-{
-    private:
-        PortPCA9655E& refPort;
-        const uint8_t pin;                      //bit pattern, IOE pin to LED
-
-    public:
-        LED_PCA9655E(PortPCA9655E& refPort, const uint8_t pin) : refPort(refPort), pin(pin) {}
-        virtual void on();
-        virtual void off();
-};
-#endif
diff --git a/tutorials/keybrd_5b_LED_on_IOE/keybrd_5b_LED_on_IOE.ino b/tutorials/keybrd_5b_LED_on_IOE/keybrd_5b_LED_on_IOE.ino
index a672861..210657e 100644
--- a/tutorials/keybrd_5b_LED_on_IOE/keybrd_5b_LED_on_IOE.ino
+++ b/tutorials/keybrd_5b_LED_on_IOE/keybrd_5b_LED_on_IOE.ino
@@ -35,7 +35,7 @@ This layout table shows left and right matrices:
 // ============ SPEED CONFIGURATION ============
 ScanDelay scanDelay(9000);
 
-// ================= LEFT PINS =================
+// ==================== IC =====================
 // ---------------- LEFT SCANNER ---------------
 uint8_t readPins[] = {14, 15};
 const uint8_t readPinCount = sizeof(readPins)/sizeof(*readPins);
@@ -45,7 +45,6 @@ Scanner_uC scanner_L(LOW, readPins, readPinCount);
 // ----------------- LEFT LEDs -----------------
 LED_uC LED_CapsLck(21);
 
-// ================ RIGHT PINS =================
 // --------------- RIGHT SCANNER ---------------
 const uint8_t IOE_ADDR = 0x20;                  //MCP23S17 address, all 3 ADDR pins are grounded
 PortMCP23S17 portA(IOE_ADDR, 0, 1<<0 | 1<<1 );  //for read and LED