You can use Logitech Gaming Software (LGS) 8.82 (or later) to customize button configuration on the G900 gaming mouse in two different modes:

• Automatic Game Detection
• On-Board Memory

NOTE: For help with choosing between these two modes, see Choose between G900 gaming mouse on-board memory and automatic game detection.

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Automatic Game Detection

1. Make sure that the G900 gaming mouse is connected to your computer using the supplied USB cable or wireless USB receiver.
2. Open the Logitech Gaming Software:
   Start > All Programs > Logitech > Logitech Gaming Software 8.8x
3. In the G900 Home window, click Automatic Game Detection, then click the glowing pointer-gear icon.

   

   The Pointer Settings window appears:

   

The G900 gaming mouse supports the following pointer customizations in Automatic Game Detection mode:

• DPI levels — Configure up to five levels, from 200-12000 in 50 DPI increments.
• Report rate — Update from 125/sec (8ms response time) to 1000/sec (1ms response time).
• Per profile pointer settings — Enable different pointer behavior for each game profile.
• Acceleration — Enhance pointer precision – the mouse pointer increases speed when you move it. For some games, this can be turned off to improve accuracy.

To configure your pointer settings:

1. Under DPI Sensitivity Levels, drag the tick mark along the graph. For each DPI level you set, you'll see a tick mark. You can set up to five. 
   NOTE: If you prefer, you can edit the list of DPI values to the left of the graph from 200-12000. For each DPI level you set, you'll see a tick mark rounded to the nearest 50. For example: If you type in "632", the software will round to 650 DPI. 
   • Assign Default — (Required) One DPI level must always be the default. To change the default, click a DPI level that doesn't have a blue diamond above it, and then click Assign Default. This is the DPI level the mouse will return to when you: 
     • Press the default DPI button
     • Switch between profiles
     • Power up the computer
     • Wake the computer from sleep mode
   • Assign Shift — (Optional)  You can quickly activate a DPI level when you press the DPI Shift button. For example, you can set  Assign Shift to a low DPI value, which will temporarily give you extreme precision. When you release the button, the mouse will revert back to the current DPI level. To set the Shift DPI, select a DPI level that isn't highlighted in orange, and then click Assign Shift.  
     TIP: Buttons you assign as DPI Up, DPI Down and DPI Cycle will enable you to change between DPI levels rapidly.
2. Change the Report Rate, if you prefer something other than the default of 1000 reports/second (1ms response time). The Report Rate controls how often your mouse updates its position to the computer. 
   NOTE: The possible range is from 125/sec (8ms response time) to 1000/sec (1ms response time). 
   You can: 
   • Decrease processor use by reducing the report rate. 
   • Increase the mouse response by raising the report rate. 
   TIP: For most PCs, a report rate of 500 is recommended.
3. Make your preferred selections under Advanced. The options are: 
   • Enable per profile pointer settings — Select this option to enable each profile to have different pointer behavior (see Setting different DPIs for gaming-mouse profiles using Logitech Gaming Software for help).
     TIP: We recommend leaving this unchecked for the initial setup. 
   • Acceleration (Enhance Pointer Precision) — Select this option to use Window's "Enhance Pointer Precision" acceleration. 
     TIP: For gaming accuracy, we recommend leaving this unchecked, but you can enable it if you prefer the feel of default Windows acceleration.

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On-Board Memory mode
The G900 gaming mouse supports these pointer customizations in On-Board Memory mode:

• DPI levels — Configure up to five levels, from 200-12000 in 50 DPI increments.
• Report rate — Update from 125/sec (8ms response time) to 1000/sec (1ms response time).

In On-Board Memory mode, all of the customizations you make will be written directly to the mouse.

To configure DPI levels:

1. Make sure your mouse is in On-Board Memory mode, and then click the glowing pointer-gear icon.

   

   The Configuration window appears.

   

2. Under DPI Sensitivity Levels, drag the tick mark along the graph. For each DPI level you set, you'll see a tick mark. You can set up to five levels. 
   • Assign Default — (Required) One DPI level must always be the default. To change the default, click a DPI level that doesn't have a blue diamond above it, and then click Assign Default. This is the DPI level the mouse will return to when you: 
     • Press the default DPI button 
     • Switch between profiles 
     • Power up the computer 
     • Wake the computer from sleep mode
   • Assign Shift — (Optional)  You can quickly activate a DPI level when you press the DPI Shift button. For example, you can set  Assign Shift to a low DPI value, which will temporarily give you extreme precision. When you release the button, the mouse will revert back to the current DPI level. To set the Shift DPI, select a DPI level that isn't highlighted in orange, and then click Assign Shift.  
     TIP: Buttons you assign as DPI Up, DPI Down and DPI Cycle will enable you to change between DPI levels rapidly. 
3. Change the Report Rate, if you prefer something other than the default of 1000 reports/second (1ms response time). The Report Rate controls how often your mouse updates its position to the computer. 
   You can: 
   • Decrease processor use by reducing the report rate. 
   • Increase the mouse response by raising the report rate.
   TIP: For most PCs, a report rate of 500 is recommended.
4. In the lower left of the configuration window, you can also change the button layout and assignment. Click on the icon for the button layout you prefer:
   • Left handed 
   • Right handed 
   • No buttons 
   • Full buttons
   Use the supplied replaceable buttons and button caps to finish customizing your mouse.
5. To customize the functions for your mouse buttons, right-click on the button and then select:
   • Assign New Command
   • Edit Command
   • Use Generic
   • Unassign
   Your changes are automatically saved.