HP Color LaserJet 4650 Printer series - Manual (Page 233)

Installing memory and fonts
You can install more memory for the printer, and you can also install a font card to allow the
printer to print characters for languages such as Chinese or the Cyrillic alphabet.
CAUTION Static electricity can damage DIMMs. When handling DIMMs, either wear an antistatic wrist
strap, or frequently touch the surface of the DIMM antistatic package and then touch bare
metal on the printer.
To install DDR memory DIMMs
1. Turn the printer off.
2. Disconnect all power and interface cables.
3. Locate the formatter board in the rear of the printer.
ENWW Installing memory and fonts 219