HP D Series

1-12
D Class System Memory Upgrade
Memory Installation Procedure
Memory Rules 1. Memory must always be added as pairs of SIMMs or DIMMs of the same size.
For example: two 16MB, two 32MB, two 64MB, two 128MB or two 256MB.
2. The largest memory SIMM pair must be installed in the lowest numbered slots,
followed by the next largest memory pair in the next lowest pair of slots, until all
SIMM modules are installed.
3. Models D200/D210/D310 Only. SIMM modules must be installed in the correct
slot sequence. The first pair of SIMMs are installed in slots 0 and 1. The next
SIMM pair would go into slots 2 and 3, and so on until all SIMM modules are
installed. Follow rule number 2.
4. Models Dx20, Dx30, Dx50, Dx60, Dx70, Dx80, and D390 Only. SIMM
modules must be installed in the correct slot sequence. The first SIMM pair is
installed in slots 0A and 0B. The next SIMM pair would go into slots 1A and
1B, and so on until all SIMM modules are installed. Follow rule number 2.
5. All Models. If the memory upgrade increments are larger than the existing
(currently installed) memory increments, ALL memory must be removed,
re-ordered, and re-installed following the rules listed in this section.
NOTE Models D250/D260 and D350/D360 Only: To install and use the 256MB or 64MB
memory modules, the computer Processor Dependent Code (PDC) must be revision
36.20 or later. To verify the PDC revision level, use the fv command in Boot
Console Handler. Refer to the PDC Code Revision section on page 32.
Models D200/D210/D310 Only. To install and use the 64MB memory pair, your
computer PDC must be revision 36.12 or later. To verify the PDC revision level use
the fv command in Boot Console Handler. Refer to the PDC Code Revision section
on page 32.
Model Dx70 Only. To install and use the 512MB memory pair, your computer PDC
must be revision 37.28 or later. To verify the PDC revision level use the fv
command in Boot Console Handler. Refer to the PDC Code Revision section on
page 32.
Memory Size and
Orientation
1. Each memory SIMM (board) has its size marked on one side of the board near
an upper corner: 16MB, 32MB, 64MB, 128MB, or 256MB. (In the figure
shown, the marking is on the reverse side of the board.)
2. The white stripe on the end of the memory SIMM identifies the end of the board
that must be toward the white ejector lever of the connector on the Processor/
Memory card.
3. The notch at the lower corner of the board also indicates the end of the board
that must go toward the white ejector lever.