Hitachi HF-W2000 Instruction Manual page 192

6. CHECKUP AND MAINTENANCE
(2) Installing a main memory
The orientation of a main memory module on a connector is fixed. When you

install a main memory module, make sure the orientation is correct. Otherwise,
failure of the equipment may result.
Do not install main memory modules with different capacities on slot A1 and

slot B1. If you do, the modules may not be recognized.
[1] Follow the instructions in "6.3.3 Installing and removing the cover of the equipment" to
remove the cover of the equipment.
[2] Insert the main memory module into the connector from right above the connector. When
the module is fully inserted, you will hear a click.
On this equipment, only the following combinations are allowed.
The number of
main memory
NOTICE
Figure 6-7 Installing a main memory
Slot A1
1 4GB
2 4GB
2 8GB
Slot A1
Slot B1
Slot B1
－
4GB
8GB
6-16
Side view
Top view
Total
capacity
4GB
8GB
16GB