Juniper QFX Series User Manual

Figure 43: AC Power Supply in QFX3500 Devices
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Handle
Ejector
lever
AC appliance
inlet
Cord retainer
The power supply provides FRU-side-to-port-side or port-side-to-FRU-side airflow
depending on the model you purchase. The power supplies have labels and arrows on
the handles that depict the direction of airflow (see Figure 44 on page 74). The label AFI
denotes FRU-side-to-port-side airflow, AFO denotes port-side-to FRU-side airflow.
Figure 44: Label Identifying Airflow Direction on Power Supply Handle
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CAUTION: Verify that the direction of the arrow on the power supply handle
matches the direction of airflow in the chassis. Ensure that each power supply
you install in the chassis has the same airflow direction. If you install power
supplies with two different airflow directions, Junos OS will raise an alarm
and the status (OK/!) LED will blink amber.
Table 14 on page 74 shows the different power supplies and their direction of airflow.
Table 14: Airfow Direction in QFX3500 Power Supplies
Direction of AirflowModel
Port-side-to-FRU-sideJPSU-650W-AC-AFO
FRU-side-to-port-sideQFXC01-PWRACI-650A
Copyright © 2012, Juniper Networks, Inc.74
QFX3000 Hardware Documentation

Juniper QFX Series Specifications

General

Category	Switch
Series	QFX
Form Factor	1U, 2U, and modular chassis options
Power Supply	Redundant, hot-swappable power supplies
Cooling	hot-swappable fans
Virtual Chassis	Supported on certain models
Typical Use	Data center, cloud
Operating System	Junos OS
Management	CLI
Key Features	High performance, low latency, automation
Latency	Sub-microsecond latency
Port Density	Varies by model (e.g., QFX5100: up to 48x10GbE + 6x40GbE)