Installing Dimms - HP ProDesk 400 G1 Maintenance And Service Manual

A. For example, if you are populating the sockets with one 2-GB DIMM, and three 1-GB DIMMs,
Channel A should be populated with the 2-GB DIMM and one 1-GB DIMM, and Channel B should
be populated with the other two 1-GB DIMMs. With this configuration, 4-GB will run as dual
channel and 1-GB will run as single channel.
In any mode, the maximum operational speed is determined by the slowest DIMM in the system.
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Installing DIMMs

CAUTION:
to drain before adding or removing memory modules. Regardless of the power-on state, voltage is
always supplied to the memory modules as long as the computer is plugged into an active AC outlet.
Adding or removing memory modules while voltage is present may cause irreparable damage to the
memory modules or system board.
The memory module sockets have gold-plated metal contacts. When upgrading the memory, it is
important to use memory modules with gold-plated metal contacts to prevent corrosion and/or
oxidation resulting from having incompatible metals in contact with each other.
Static electricity can damage the electronic components of the computer or optional cards. Before
beginning these procedures, ensure that you are discharged of static electricity by briefly touching a
grounded metal object.
When handling a memory module, be careful not to touch any of the contacts. Doing so may damage
the module.
1. Prepare the computer for disassembly
2. Remove the access panel
3. Open both latches of the memory module socket (1), and insert the memory module into the
socket (2).
NOTE:
the tab on the memory socket.
Populate the black DIMM sockets before the white DIMM sockets.
For maximum performance, populate the sockets so that the memory capacity is spread as equally
as possible between Channel A and Channel B.
You must disconnect the power cord and wait approximately 30 seconds for the power
(Access panel on page
A memory module can be installed in only one way. Match the notch on the module with
(Preparation for disassembly on page
43)
42).
Memory
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