dust from entering the device, but the amount of dust that enters the network cabinet does
not damage the device. The second number "5" refers to the class for preventing water
from entering the network cabinet. That is, the water sprayed from different directions
to the network cabinet does not damage the device. )
Don’t stack installation of the MA5821/MA5822.
The modes of installing the MDU in the network cabinet of the customer vary with the
specifications for the network cabinet of the customer. The following section describes the
common modes to be taken for installing the MDU in the natural heat dissipation network cabinet
(The network cabinet is without fan) of the customer. This can serve as a guide for hardware
engineers to install the MDU (fix the rack-mounting ears on the front, side or back).
1. MA5821/MA5822ontally installed (with
the panel facing the front)
2. MA5821/MA5822 vertically installed (with
the panel facing the front)
3. MA5821/MA5822 vertically installed
(with the panel facing downwards, fix the
rack-mounting ears on the side)
4. MA5821/MA5822 vertically installed
(with the panel facing the right, fix the rack-
mounting ears on the side)
CAUTION
>2 U
顶部
The side
>2 U
The GE electrical
port (above)
The optical port
(below)
