diff --git a/left/src/bridge_protocol_handler.c b/left/src/bridge_protocol_handler.c
index a0ac92a..d2aa49e 100644
--- a/left/src/bridge_protocol_handler.c
+++ b/left/src/bridge_protocol_handler.c
@@ -3,6 +3,7 @@
 #include "main.h"
 #include "i2c_addresses.h"
 #include "i2c.h"
+#include "iso_jumper.h"
 
 void SetError(uint8_t error);
 void SetGenericError();
@@ -36,5 +37,8 @@ void BridgeProtocolHandler()
             BridgeTxSize = 0;
             TEST_LED_SET(BridgeRxBuffer[1]);
             break;
-        }
+        case BRIDGE_COMMAND_GET_ISO_JUMPER_STATE:
+            BridgeTxBuffer[0] = IsoJumperState;
+            break;
+    }
 }
diff --git a/left/src/bridge_protocol_handler.h b/left/src/bridge_protocol_handler.h
index dbee2a3..c85b3a2 100644
--- a/left/src/bridge_protocol_handler.h
+++ b/left/src/bridge_protocol_handler.h
@@ -15,6 +15,7 @@
 
     #define BRIDGE_COMMAND_GET_KEY_STATES 0
     #define BRIDGE_COMMAND_SET_LED        1
+    #define BRIDGE_COMMAND_GET_ISO_JUMPER_STATE 2
 
 // Variables:
 
diff --git a/left/src/init_peripherials.c b/left/src/init_peripherials.c
index 9981a32..4a490c2 100644
--- a/left/src/init_peripherials.c
+++ b/left/src/init_peripherials.c
@@ -6,6 +6,7 @@
 #include "fsl_i2c.h"
 #include "fsl_clock.h"
 #include "i2c.h"
+#include "iso_jumper.h"
 
 void InitI2c() {
     port_pin_config_t pinConfig = {
@@ -41,5 +42,6 @@ void InitPeripherials(void)
 {
     InitLedDriver();
     InitTestLed();
+    InitIsoJumper();
     InitI2c();
 }
diff --git a/left/src/iso_jumper.c b/left/src/iso_jumper.c
new file mode 100644
index 0000000..69b6ce9
--- /dev/null
+++ b/left/src/iso_jumper.c
@@ -0,0 +1,14 @@
+#include "iso_jumper.h"
+#include "fsl_port.h"
+
+void InitIsoJumper() {
+    CLOCK_EnableClock(ISO_JUMPER_INPUT_CLOCK);
+    PORT_SetPinConfig(ISO_JUMPER_INPUT_PORT, ISO_JUMPER_INPUT_PIN,
+                      &(port_pin_config_t){.pullSelect=kPORT_PullDown, .mux=kPORT_MuxAsGpio});
+    GPIO_PinInit(ISO_JUMPER_INPUT_GPIO, ISO_JUMPER_INPUT_PIN, &(gpio_pin_config_t){kGPIO_DigitalInput});
+
+    CLOCK_EnableClock(ISO_JUMPER_OUTPUT_CLOCK);
+    PORT_SetPinConfig(ISO_JUMPER_OUTPUT_PORT, ISO_JUMPER_OUTPUT_PIN,
+                      &(port_pin_config_t){.pullSelect=kPORT_PullDisable, .mux=kPORT_MuxAsGpio});
+        GPIO_PinInit(ISO_JUMPER_OUTPUT_GPIO, ISO_JUMPER_OUTPUT_PIN, &(gpio_pin_config_t){kGPIO_DigitalOutput, 1});
+}
diff --git a/left/src/iso_jumper.h b/left/src/iso_jumper.h
new file mode 100644
index 0000000..1b4eeb2
--- /dev/null
+++ b/left/src/iso_jumper.h
@@ -0,0 +1,30 @@
+#ifndef __ISO_JUMPER_H__
+#define __ISO_JUMPER_H__
+
+// Includes:
+
+    #include "fsl_gpio.h"
+
+// Macros:
+
+    #define ISO_JUMPER_INPUT_GPIO        GPIOB
+    #define ISO_JUMPER_INPUT_PORT        PORTB
+    #define ISO_JUMPER_INPUT_CLOCK       kCLOCK_PortB
+    #define ISO_JUMPER_INPUT_PIN         13
+    #define ISO_JUMPER_INPUT_IRQ         PORTB_IRQn
+    #define ISO_JUMPER_INPUT_IRQ_HANDLER PORTB_IRQHandler
+
+    #define ISO_JUMPER_OUTPUT_GPIO        GPIOA
+    #define ISO_JUMPER_OUTPUT_PORT        PORTA
+    #define ISO_JUMPER_OUTPUT_CLOCK       kCLOCK_PortA
+    #define ISO_JUMPER_OUTPUT_PIN         6
+    #define ISO_JUMPER_OUTPUT_IRQ         PORTA_IRQn
+    #define ISO_JUMPER_OUTPUT_IRQ_HANDLER PORTA_IRQHandler
+
+    #define ISO_JUMPER_IS_ENABLED !GPIO_ReadPinInput(ISO_JUMPER_INPUT_GPIO, ISO_JUMPER_INPUT_PIN)
+
+// Functions:
+
+    extern void InitIsoJumper();
+
+#endif
diff --git a/left/src/main.c b/left/src/main.c
index fbefb07..7117ed8 100644
--- a/left/src/main.c
+++ b/left/src/main.c
@@ -9,6 +9,7 @@
 #include "i2c.h"
 #include "init_peripherials.h"
 #include "bridge_protocol_handler.h"
+#include "iso_jumper.h"
 
 key_matrix_t keyMatrix = {
     .colNum = KEYBOARD_MATRIX_COLS_NUM,
@@ -30,6 +31,7 @@ key_matrix_t keyMatrix = {
         {PORTA, GPIOA, kCLOCK_PortA, 4}
     }
 };
+uint8_t IsoJumperState;
 
 i2c_slave_config_t slaveConfig;
 i2c_slave_handle_t slaveHandle;
@@ -63,6 +65,7 @@ int main(void)
 {
     InitClock();
     InitPeripherials();
+    IsoJumperState = ISO_JUMPER_IS_ENABLED;
 
     I2C_SlaveGetDefaultConfig(&slaveConfig);
     slaveConfig.slaveAddress = I2C_ADDRESS_LEFT_KEYBOARD_HALF;
diff --git a/left/src/main.h b/left/src/main.h
index 7df0c8c..abc3bcb 100644
--- a/left/src/main.h
+++ b/left/src/main.h
@@ -13,5 +13,6 @@
 // Variables:
 
     extern key_matrix_t keyMatrix;
+    extern uint8_t IsoJumperState;
 
 #endif
diff --git a/right/src/usb_protocol_handler.c b/right/src/usb_protocol_handler.c
index c3ff039..482f003 100644
--- a/right/src/usb_protocol_handler.c
+++ b/right/src/usb_protocol_handler.c
@@ -18,6 +18,7 @@ void WriteEeprom();
 void ReadEeprom();
 void ReadMergeSensor();
 void ReadLedJumper();
+void ReadIsoJumper();
 
 // Functions for setting error statuses
 
@@ -69,6 +70,9 @@ void UsbProtocolHandler()
         case USB_COMMAND_READ_LED_JUMPER:
             ReadLedJumper();
             break;
+        case USB_COMMAND_READ_ISO_JUMPER:
+            ReadIsoJumper();
+            break;
         default:
             break;
     }
@@ -196,3 +200,14 @@ void ReadLedJumper()
 {
     SetResponseByte(LED_JUMPER_IS_ENABLED);
 }
+
+void ReadIsoJumper()
+{
+    uint8_t txBuffer[] = {2};
+    I2cWrite(I2C_MAIN_BUS_BASEADDR, I2C_ADDRESS_LEFT_KEYBOARD_HALF, txBuffer, sizeof(txBuffer));
+
+    uint8_t rxBuffer[1];
+    I2cRead(I2C_MAIN_BUS_BASEADDR, I2C_ADDRESS_LEFT_KEYBOARD_HALF, rxBuffer, sizeof(rxBuffer));
+
+    SetResponseByte(rxBuffer[0]);
+}
diff --git a/right/src/usb_protocol_handler.h b/right/src/usb_protocol_handler.h
index c726f20..2ccef06 100644
--- a/right/src/usb_protocol_handler.h
+++ b/right/src/usb_protocol_handler.h
@@ -26,6 +26,7 @@
     #define USB_COMMAND_READ_EEPROM     6
     #define USB_COMMAND_READ_MERGE_SENSOR     7
     #define USB_COMMAND_READ_LED_JUMPER 8
+    #define USB_COMMAND_READ_ISO_JUMPER 9
 
 // Functions: