Siemens PANEL PC 877 Installing and removing memory modules, Memory expansion

Maintenance and service

12.4 Installing and removing hardware components

12.4.3Installing and removing memory modules

Memory expansion

The motherboard is equipped with 2 slots for memory modules. 184 pin DDR266 or PC2700 memory modules can be used, unbuffered, no ECC. This enables you to expand the memory capacity of the device to a maximum of 2 GB. These slots can be fitted with one or two memory modules.

Combination	Slot X3	Slot X4	Maximum expansion
1	256/512 MB/1 GB		1 GB
2	256/512 MB/1 GB	256/512 MB/1 GB	2 GB

Note

Any module can be plugged into any slot.

Preparation

Disconnect the device from mains and unplug all cables.

Caution

The electronic components on the PCBS are highly sensitive to electrostatic discharge. It is therefore vital to take precautionary measures when handling these components. Refer to the directives for handling electrostatic sensitive components. For more information, please refer to the section "ESD directives".

12-10	SIMATIC Panel PC 877
	Operating instructions, Release 07/2006, A5E00877780-01