8
Fig 1-4 ES4704BD Front Panel View
①
Management slot: It supports two management slots.
EM4704BD-M24TX4GC or EM4704BD-M12GX-SFP can be inserted in
to the Management slots.The second slot can also be used as I/O slot for
configuring various I/O modules, such as EM4700BD-12GX-SFP ,
EM4700BD-12GT-RJ45
，
EM4700BD-2XG-XENPAK and more.
②
Network slot: 2 network slots are provided. Various network modules
can be added to the network slots, such as EM4700BD-12GT-RJ45,
EM4700BD-12GX-SFP, EM4700BD-2XG-XENPAK,etc.
③
Power slot: used for system power supply modules. Supports up to two
300W AC modules.
④
Fan tray slot: supports up to one system fan assemblies, each assembly
consists of four axial fans.
⑤
Dust gauze slot: exterior air inlet for the ventilation subsystem.
⑥
Distribution box slot: for system distribution box use, works in AC mode
based on the power modules.
1.4.1.1.1 Board Rack
The board rack consists of board slots and a system board.
The boards are inserted vertically into the ES4704BD 4 unit boards are provided.
There are four slots in ES4704BD from number 1 to number 4 in order of top to down. The
first slot is used to install management module; the second slot is used to management
module under 1+1 redundant backup mode or install various I/O interface modules.
A reset button (printed on the panel as
Reset
), hot swap button (printed on the panel
as
SWAP
), board power indicator (printed on the panel as
PWR
) and board running status
indicator (printed on the panel as
RUN
) are provided for each board. On the Main Control
cards there is Master-Slave indicator (printed on the panel as
M/S
) There is also a power
module status indicator (printed on the panel as
Power
), fan assembly status indicator
(printed on the panel as
Fan
), and interface status indicators for corresponding
management interfaces and network interfaces (printed on the panel as
Link
and
Act
).