Additional Information
This section provides information for the additional features that are part of your computer.
Memory Module Guidelines
To ensure optimal performance of your computer, observe the following general guidelines when conguring your system memory:
• Memory modules of dierent sizes can be mixed (for example, 2 GB and 4 GB). But, all populated channels must have identical
congurations.
• Memory modules must be installed beginning with the rst socket.
NOTE: Registered DIMMS (R-DIMMs) and Load Reduced DIMMS (LR-DIMMs) cannot be mixed.
• If memory modules with dierent speeds are installed, they operate at the speed of the slowest installed memory modules.
NOTE: If all DIMMs are 2133, the CPU ordered may run the memory at a slower speed.
Front Panel Chassis Lock
The front panel chassis lock allows you to lock the front panel. The lock is located inside the chassis. It consists of two buttons:
• orange button — press this button to lock the front panel.
• green button — press this button to unlock the front panel.
NOTE
: To lock or unlock the front panel chassis, always ensure that the left cover of the chassis is removed. For information on
removing the left cover, see Removing Left Cover.
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