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.

Bluetooth mode
NOTE: Logitech Gaming Software (LGS) does not detect the G603 gaming mouse while
connected to a computer in Bluetooth mode.
1. Make sure at least one battery is installed in the mouse.
2. 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.
3. Follow the instructions in the support articles below to connect a Bluetooth device to
your computer, phone or tablet:
oWindows 10: https://support.microsoft.com/help/17156/windows-10-connect-to-
bluetooth-devices
omacOS Sierra: https://support.apple.com/kb/PH25090
oChrome OS: https://support.google.com/chromebook/answer/2587653
oAndroid: https://support.google.com/nexus/answer/2819579
4. 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.

+G603 gaming mouse performance and endurance modes when using Bluetooth
When your G603 gaming mouse is connected to a device using Bluetooth, the performance is the
same whether you’re using performance mode (HI position on the power switch) or endurance
mode (LO position on the power switch). The mouse report rate is fixed at 8 ms (125 Hz) and
cannot be increased.
If you want to change the report rate of the mouse, use the included LIGHTSPEED receiver
instead. For more information, see Connect the G603 gaming mouse to a computer.
+LED Indicators on the G603 gaming mouse
There are two LED indicators on the G603 gaming mouse, one on top and the other on the
bottom of the mouse.
LED on top of the G603 gaming mouse
LED
color
Status
Duration
Blue
Mouse is switched from USB
(LIGHTSPEED) to Bluetooth mode
or is turned on while in Bluetooth
mode.
5 seconds
Green
Mouse is switched from Bluetooth
mode to USB (LIGHTSPEED) or is
turned on while in endurance mode.
5 seconds
Cyan
Mouse is switched from Bluetooth
mode to USB (LIGHTSPEED) or is
turned on while in performance mode.
5 seconds
Red
Battery level below 15%
Blinks for 30 seconds after
mouse is turned on in
either mode or connection
type.
Yellow
Sensitivity level 1 active
3 seconds
White
Sensitivity level 2 active
3 seconds
Orange
Sensitivity level 3 active
3 seconds
Magenta
Sensitivity level 4 active
3 seconds
Blue
Sensitivity level 5 active
3 seconds
NOTE: The sensitivity level indicators are prioritized over the power on, mode switch,
connection switch, and battery level indicators.

For more information about the LIGHTSPEED (USB) and Bluetooth connections or
Performance and Endurance modes, see Connect the G603 gaming mouse to a computer.
LED on bottom of the G603 gaming mouse
LED Color
Status
Duration
Solid blue
Mouse is connected to a device in Bluetooth
mode.
2 seconds
Solid white
Mouse is connected to a device in USB
(LIGHTSPEED) mode.
2 seconds
Slowly
blinking blue
Mouse is in Bluetooth mode, not connected
to a device.
2 seconds
Slowly
blinking white
Mouse is in USB (LIGHTSPEED) mode,
not connected to a device.
2 seconds
Quickly
blinking blue
Ready to pair to a Bluetooth device.
3
minutes
+Finding the correct .exe file for a gaming-mouse profile
If you're having trouble with profile detection, you may not have the profile associated with the
correct or active game .exe file.
To find the active .exe for a game, you can either:
Associate automatically using a G-Series keyboard with an LCD screen (see
360023243694).
OR
Find the .exe through Windows Task Manager (see 360023243694).
NOTE: You only need to do one of the above if the profile is not associated correctly. If you can
point to the correct .exe when creating a profile, you don't need to do either one.
+Troubleshooting gaming mouse profile detection using Logitech Gaming Software
You can configure your gaming mouse separately for each game or application on your computer
(see 360023406553 for instructions). When a game is launched, the profile associated with it
should activate. Sometimes, the profile doesn't activate properly, which can prevent game-
specific settings from being applied.
When a game profile isn't activating properly:
Try using a Persistent Profile (see answer 360023406553 for instructions).

NOTE: Using a persistent profile will help you determine if the Logitech Gaming
Software is working properly.
Make sure the correct .exe file is selected for the game (see answer 360023406553 for
help).
Check that both the single player and multiplayer .exe files have profiles (see
answer 360023406553 for help).
+Troubleshooting mouse button assignments and macros using Logitech Gaming
Software
When your button assignments and macros aren't working the way you configured them, the
problem usually has to do with the active profile.
Here are some ways to try and resolve this issue:
Lock the profile while the game is running (see answer 360023406013 for instructions).
Try using a Persistent Profile to determine if the software is working properly (see
answer 360023406013 for instructions).
Check that the correct .exe is selected for the game (see answer 360023406013 for help).
Make sure both the single player and multiplayer .exes have profiles (see
answer 360023406013 for help).
+Linking profiles between a G-Series keyboard and gaming mouse using Logitech
Gaming Software
Logitech Gaming Software (LGS) shares the profiles between your G-Series keyboard and your
gaming mouse, so no manual profile linking is needed. Macros and keystrokes you configured
for your G-Series keyboard can be assigned to your gaming mouse, and mouse button presses
you configured for your gaming mouse can be assigned to your G-Series keyboard.
NOTE: Certain mouse-specific buttons, like DPI Shift, can only be used with LGS-compatible
mice. If you assign a G-Key on your keyboard as DPI Shift with a non-LGS mouse, the button
will have no effect. Most other button presses, like Left and Right Click, can be assigned to your
G-Keys.
+Gaming mouse profile stops working in the middle of a game
When a profile stops working in the middle of a game, there are two possible causes. Either the
profile is:
Not associated with the correct .exe file
The profile is detected in the game launcher or menu, but stops working while playing the
game. This happens when the profile isn't associated to the correct .exe file. You can fix
this by assigning the game's .exe file to the profile and not the launcher's .exe file. See
360023405833 for instructions.

OR
Reverted to the Default Profile
Another application running on your computer may come to the foreground, causing the
active profile to revert to the Default Profile. You can fix this by locking the profile
assigned to the game. See 360023405833 for instructions.
+Cursor does not follow gaming mouse movements
If the cursor isn't following the movements of your mouse, try the following:
Make sure your mouse is firmly connected to a USB port on your computer (not to a
USB hub).
Try a different mouse pad.
Check the sensor port (on the bottom of the mouse) for dust or lint.
Avoid using your mouse on:

oGlass or other see-through surfaces
oReflective surfaces, such as mirrors and metal desks
oWood grains and grooved surfaces
oVery high gloss finished surfaces
Try the mouse on a piece of white paper to make sure it isn't a tracking issue on a
particular surface you're using.
If the above steps don't resolve your problem, the erratic movement may be caused by software
(for example, if the cursor speed is set too fast).
+My gaming-mouse profile stopped working after a game update
Each profile is associated with a specific .exe file. Sometimes, when you install a game update or
expansion pack, the location of the correct.exe may change.
If you recently installed a game update and then your game profile stopped working, see
answer 360023405693 for help with finding the current game .exe.
+Gaming mouse and keyboard compatibility with USB hubs and KVM switches
We don't support the use of third-party devices with our mice and keyboards. They can interfere
with communication between a mouse or keyboard and the computer.
Unsupported third-party devices include:
KVM switch boxes
Port replicators
Docking stations
USB hubs

NOTE: The manufacturers of these third-party devices implement keyboard and mouse support
in different ways. There is currently no industry standard.
+Setting different DPIs for gaming-mouse profiles using Logitech Gaming Software
Logitech Gaming Software (LGS) configures DPI and other mouse pointer adjustments to work
on all profiles by default. Using LGS, you can set different DPIs and pointer behavior for each
game profile.
NOTE: This is an advanced setting and each game's profile will have to be individually
configured, but it allows for maximum flexibility and configurability.
To set up different DPI settings for profiles:
1. Open the Logitech Gaming Software:
Start > All Programs > Logitech > Logitech Gaming Software 8.x
NOTE: Make sure Logitech Gaming Software is set to “Automatic Game Detection”.
2. Click Customize Pointer Settings.
The Pointer Settings window will appear.

3. Select the "Enable per profile pointer settings" check box under the Advanced section.
The Profiles area will appear in your window.

You can now set different DPI levels and report rates for each profile. The settings will stay as
long as "Enable per profile pointer settings" is selected. If you:
Clear this check box —the software will revert back to a single DPI setting for all
applications.
Select this check box again —the pointer settings you set up for each profile will be
restored.
+Purchase a new gaming mouse receiver
If you’ve lost or misplaced the receiver for your gaming mouse:
1. Go to support.logitech.com.
2. Search for your gaming mouse or use the drop-down menus to locate the product's
support page.
3. If there is a spare receiver for your gaming mouse, it’ll be listed under “Spare Parts”.
Select the part and then click Add to cart.

If there isn’t a spare receiver listed for your gaming mouse, please contact Logitech Support.
+Gaming mouse compatibility with Logitech Unifying receivers
The Logitech G403 Wireless, G304, G305, G603, G703, G903 are built on the LIGHTSPEED
architecture and connect to proprietary LIGHTSPEED receivers. They are not compatible and
cannot be paired with the Unifying receiver.
+Pair Logitech G gaming mouse to a LIGHTSPEED receiver
If your gaming mouse becomes unpaired or if you receive a replacement LIGHTSPEED
receiver, follow these instructions to pair your mouse with the receiver:
1. Connect the LIGHTSPEED receiver to a USB port on the computer.
2. Download the Logitech Connection Utility from the Downloads page.
3. Launch the Logitech Connection Utility.
4. Press Next to start the pairing process.
5. Turn the mouse OFF and then ON using the power switch on the bottom of the mouse.