You can connect the G603 gaming mouse to your computer, phone or tablet with the included LIGHTSPEED USB receiver or using Bluetooth. Before you connect your mouse, make sure you’ve installed one or two AA batteries.
Installing the batteries
USB (LIGHTSPEED) Mode
Bluetooth mode
NOTE: Logitech Gaming Software (LGS) does not detect the G603 gaming mouse while connected to a computer in Bluetooth mode.
Switching between USB and Bluetooth modes
You can switch between USB and Bluetooth modes at any time by pressing the easy-switch button underneath the mouse.
- Installing the batteries
- USB (LIGHTSPEED) mode
- Bluetooth mode
- Switching between USB and Bluetooth modes
Installing the batteries
- Position your thumb below the DPI Cycling button as shown.
- Use your index finger to lift the keyplate, leaving the battery cage exposed.
- Install one or both of the included AA batteries in the battery cage. If you want to use only one battery, you can install it in either of the available slots.
- Hold the keyplate above its original position on top of the mouse — the magnets will help guide it into place.
USB (LIGHTSPEED) Mode
- Make sure at least one battery is installed in the mouse.
- Connect the receiver extension cable to a USB port on your computer. Connect the LIGHTSPEED receiver to the other end of the extension cable. NOTE: You can also connect the LIGHTSPEED receiver directly to a USB port on your computer.
- Use your thumb to push the power switch at the bottom of the mouse upwards into the LO (endurance mode) or HI (performance mode) position:
- Endurance mode: The report rate of the mouse is fixed at 8 ms (125 Hz) to maximize battery life. The report rate in endurance mode cannot be adjusted using Logitech Gaming Software (LGS).
- Performance mode: By default, the mouse report rate is set to 1 ms (1000 Hz). After installing LGS, you can increase the report rate in performance mode to 2 ms (500 Hz), 4 ms (250 Hz) or 8 ms (125 Hz).
- The mouse and LIGHTSPEED receiver connect automatically. If you lift the mouse, the LED at the bottom turns solid white for 2 seconds. For more information about the LED indicators, see LED Indicators on the G603 gaming mouse.
- Keep the mouse and receiver at least 2 m from wireless routers or other 2.4GHz wireless devices to minimize environmental noise.
- To ensure optimal performance in noisy wireless environments, we recommend that you keep the receiver within 20 cm of the mouse.
Bluetooth mode
NOTE: Logitech Gaming Software (LGS) does not detect the G603 gaming mouse while connected to a computer in Bluetooth mode.
- Make sure at least one battery is installed in the mouse.
- Use your thumb to push the power switch at the bottom of the mouse upwards into the LO (endurance mode) position. In endurance mode, the mouse report rate is set to 8 ms (125 Hz) and cannot be adjusted. Hold the easy-switch button for 3 seconds to enter Bluetooth pairing mode. NOTE: The LED above the easy-switch button starts blinking blue to indicate that the mouse is ready to pair.
- Follow the instructions in the support articles below to connect a Bluetooth device to your computer, phone or tablet:
- If you lift the mouse, the LED at the bottom turns solid blue for 2 seconds. For more information about the LED indicators, see LED Indicators on the G603 gaming mouse.
Switching between USB and Bluetooth modes
You can switch between USB and Bluetooth modes at any time by pressing the easy-switch button underneath the mouse.
Frequently Asked Questions
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