Logitech G603 LIGHTSPEED Instruction Manual
Frequently Asked Questions
+Device does not appear in G HUB
If some features of G HUB do not appear to work correctly and restarting doesn't help, try this:
1. Go to Device Manager (WIN+PAUSE|BREAK).
2. Click on View at the top and view Devices by container.
3. Look for your device and expand it. You are looking for the name of the device, for
example, Logitech Pro X Gaming Headset, or Logitech G560 Gaming Speaker.
4. Right-click and select Uninstall Device.
5. Check Delete the driver software for this device and then click Uninstall.
6. Unplug the device and plug it back into a different USB port.
It should re-enumerate and be detected in G HUB.
7. G HUB should then download the driver for your device.
If issues persist:
Run G HUB with the default settings:
1. Exit G HUB by right-clicking the applet in the task tray and selecting Quit.
2. Navigate to C:\Users\[USERNAME]\AppData\Local\LGHUB, where [USERNAME]
will specific to your account.
3. Find settings.json and make a copy and back this up somewhere on your computer. The
Desktop is a good place so you can find it easily.
4. Navigate to C:\Users\[USERNAME]\AppData\Local\LGHUB, where [USERNAME]
will be specific to your account.
5. Delete the settings.json file in the LGHUB folder.
6. Run G HUB. You will notice that all the settings have been set back to default and the
settings.json file has been rebuilt.
Restoring your old settings
If you want to restore your old settings:
1. Quit G HUB.
2. Copy and paste the backup of settings.json that you saved earlier into the
C:\Users\[USERNAME]\AppData\Local\LGHUB folder.
3. Run G HUB —your old settings should be restored.
+G HUB freezes while loading and logo animation loops
If G HUB seems to be stuck while trying to load and the logo animation loops, try the following:
1. Exit G HUB by right-clicking the applet in the task tray and selecting Quit.
2. Navigate to Task Manager (CTRL+ALT+DEL).
NOTE: You may also need to click More Details at the bottom of the window
Look for LGHUB, LGHUB Agent and LGHUB Updater, right-click and choose End
task on each.
3. Once those processes are ended, navigate to C:\Program Files\LGHUB and run these in
order:
oLghub_updater.exe
oLghub_agent.exe
oLghub.exe
This should resolve the logo spinning issue. If it doesn’t, then make sure you’re running with
admin privileges. G HUB might need to update and needs admin privileges to do this.
If you’re using an administrator account and the issue persists, please follow the steps in G HUB
Install/Uninstall/Update Troubleshooting.
+Audio device not recognized
If you have problems with a headset or speaker, the following:
Revert back to Microsoft drivers:
1. Go to Device Manager (WIN+PAUSE|BREAK).
2. Click on the View tab at the top and select Devices by container.
3. Look for your headset/speaker and expand it. You are looking for the named device, for
example, Logitech G560 Gaming Speaker or Logitech Pro X Gaming Headset.
4. Right-click and click Properties and then select the Driver tab.
The Driver Provider should be Logitech —if it’s Microsoft you don't need to change
the driver.
5. If the driver is Logitech, click Update Driver and then Browse my computer for driver
software > Let me pick from a list... > and choose USB Audio Device.
6. Click Next. This should update back to Microsoft's standard drivers.
Update to latest Logitech Audio Driver:
1. On the same device in Device Manager, right-click on Properties and then click the
Driver tab.
2. Click Update Driver > Browse my computer for driver software.
3. Click the Browse button to the right of Search for drivers in this location:
Navigate to: C:\ProgramData\LGHUB\depots\2xxxx\driver_audio\ (note that although
the five-digit number might be different, you are looking for a folder containing the
driver audio folder).
4. Click Next to update to the latest audio driver.
If issues persist:
1. Go to Device Manager (WIN+PAUSE|BREAK).
2. Click on View at the top and select View devices by container.
3. Look for your device in the list and expand it. You are looking for the named device, for
example, Logitech Pro X Gaming Headset, or Logitech G560 Gaming Speaker.
4. Right-click and select Uninstall device.
5. Check Delete the driver software for this device and then click Uninstall.
6. Unplug the device and plug it back into a different USB port. It should re-enumerate and
be detected in G HUB.
7. G HUB should then download the driver for your device.
+Connect the G603 gaming mouse to a compatible device
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
Switching between USB and Bluetooth modes
Installing the batteries
1. Position your thumb below the DPI Cycling button as shown.
2. Use your index finger to lift the keyplate, leaving the battery cage exposed.
3. 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.
4. Hold the keyplate above its original position on top of the mouse —the magnets will
help guide it into place.
USB (LIGHTSPEED) Mode
1. Make sure at least one battery is installed in the mouse.
2. 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.
3. 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:
oEndurance 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).
oPerformance 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).
4. 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.
TIPS:
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.
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