Hn4000 Main Chassis; Hn4000 Cooling Unit Module; Figure 1-3 - Annotated Front View Of Hn4000 Equipment; Table 1-1 Hn4000 Main Chassis Size And Weight - Hatteras HN4000 Hardware Installation Manual

1-4
HN4000 Metro Ethernet Copper Access Switch Overview
As shown in Figure
❒
main chassis
❒
Cooling Unit module
❒
field‐replaceable high‐speed network module
Modular, field
replaceable cooling
unit
Figure 1-3 Annotated Front View of HN4000 Equipment (HN4000e Shown)

1.3.1 HN4000 Main Chassis

The HN4000 main chassis is the power source for the circuit cards and the HN4000 Cooling
Unit.
Table 1-1 HN4000 Main Chassis Size and Weight
HN4000 Main Chassis
Dimensions
Weight

1.3.2 HN4000 Cooling Unit Module

The HN4000 can be ordered with a side air‐exhaust option or with a rear air‐exhaust option.
(The same Cooling Unit module works with both air‐exhaust locations.)
The HN4000 Cooling Unit module contains three temperature‐controlled fans and an air‐filter
assembly. An HN4000's Cooling Unit module can be replaced without service outage.
HN4000 Hardware Installation Guide
1‐3, the HN4000 switch has the following major components:
Main chassis
Height: 1.72" (44 mm)
Width: 17.45" (444 mm)
Depth: 9.88" (19" and 23" racks, w/o cables); 251 mm
(ETSI racks/cabinets, w/o cables)
11 lbs (5 kg)
Universal I/O Slot for field
replaceable high-speed
network module with dual-
redundant ports
920550-5020 Rev 14