HP Color LaserJet 4500 Printer series - Manual (Page 170)

170 DIMM Installation
EN
DIMM Configuration
This printer supports up to 208 MB of memory. You can add additional
Random Access Memory (RAM) to this printer by installing Dual
Inline Memory Modules (DIMMs). The printer uses 100-pin, non-
parity, synchronous DRAM memory modules. Extended Data Output
(EDO) DIMMs are not supported.
Note Do not exceed 208 MB of total printer memory.
You can install 4, 8, 16, 32 or 64 MB DIMMs into the printer’s three
DIMM slots. Synchronous DRAM modules do not need to be
configured in pairs (in corresponding left and right slots).
CAUTION Do not attempt to remove the DIMM in slot #4 (see figure A-1). The
DIMM in slot #4 is part of the printer’s firmware. Removing it will affect
printer operation.
Figure A-1 Do not remove the DIMM in slot #4.