HP 2240 Owner's Manual page 159

Memory DIMMs
Figure B–23.CPU Assembly Orientation
7.
Refer to the Position Guide on the CPU board that states,
"<–– POSITION MEM MODULE AS SHOWN," as shown in
Figure B–23.
8.
Install pairs of DIMMs in the following order: Pair 1 (0A, 0B),
Pair 2 (1A, 1B), Pair 3 (2A, 2B), and so on.
This workstation has 16 memory slots, labeled 0A, 0B through
7A, 7B. Memory DIMMs must be installed in pairs of equal size,
with the largest pairs installed first, followed in order from larg-
est to smallest pairs. Figure B–24 gives the recommended order
for installing pairs of DIMMs.
Any Combination of memory may be used, although, for maxi-
mum performance, we recommend using common-sized memory
DIMMs; for example, either all 128 MB, 256 MB, or 512 MB
DIMM pairs. Therefore, to achieve both maximum performance
Position Guide
B-41