Logitech G603 LIGHTSPEED Frequently Asked Questions Manual page 14

For more information about the LIGHTSPEED (USB) and Bluetooth connections or
Performance and Endurance modes, see
LED on bottom of the G603 gaming mouse
LED Color
Mouse is connected to a device in Bluetooth
Solid blue
mode.
Mouse is connected to a device in USB
Solid white
(LIGHTSPEED) mode.
Slowly Mouse is in Bluetooth mode, not connected
blinking blue to a device.
Slowly Mouse is in USB (LIGHTSPEED) mode,
blinking white not connected to a device.
Quickly
Ready to pair to a Bluetooth device.
blinking blue
 +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
Connect the G603 gaming mouse to a
Status
360023406553
computer.
Duration
2 seconds
2 seconds
2 seconds
2 seconds
3
minutes
for instructions).