Upgrading Main Memory - Siemens D981 Technical Manual

Add-on modules

Upgrading main memory

The system board incorporates three or four locations for installing memory
modules in DIMM format. The board supports a maximum of 512 Mbytes.SDRAM
memory modules can be used.
You may use memory modules of different size.
DIMM = Dual Inline Memory Module
SDRAM = Synchronous Dynamic Random Access Memory
You may only use unbuffered 3.3V memory modules. Buffered memory
!
modules are not permitted.
SDRAM memory modules must have a cycle time of 15 ns or less or be
designed for a clock frequency of 66 MHz.
Installing memory modules
²
Flip the holders on each side of the relevant location outwards.
²
Insert the memory module into the location.
²
At the same time flip the lateral holders upwards until the memory module
snaps in place.
Removing a memory module
²
Flip the holders to the right and left of the location outwards.
²
Pull the memory module out of its location.
10 - English
Upgrading main memory
A26361-D981-Z120-9-7419