Huawei Quidway AR 28 Series Installation Manual page 90

Quidway AR 28 Series Routers Installation Manual
Where, "128M bytes DDR SDRAM" means that the router is installed with a 128 MB
DDR SDRAM.
Note:
There is a limit on the times that you can install the SDRAM.
I. Checking position of the SDRAM
The following table describes the memory types and their requirements.
Table 6-2 Memory types available with the AR 28 series
Item
Memory type
Acceptable
maximum size
of a
memory (MB)
Extension
The following figure illustrates the position of the SDRAM on the AR 28-09
/28-10/28-11/28-12/28-13/28-14.
Figure 6-8 Position of the SDRAM on the AR 28-09/28-10/28-11/28-12/28-13/28-14
The following figure illustrates the position of the SDRAM on the AR
28-30/28-31/28-40/28-80.
AR 28-09/28-10
/28-11
SDRAM
128
single
Not extendable
Huawei Technologies Proprietary
AR 28-12/28-13
/28-14
SDRAM
256
Extendable
256 MB at the
original memory
slot
6-17
Chapter 6 Router Maintenance
AR 28-30/28-31
/28-40/28-80
SDRAM
256
to
Extendable to 256 MB
at any or both of the
memory slots