Juniper EX4650 Series User Manual

NOTE: The DC power supply in the switch has four terminals labeled V-, V-, V+, and V+ for
connecting DC power source cables labeled positive (+) and negative (–) as shown in
Figure 24 on page 51.
Figure 24: DC power supply faceplate of an EX4650 switch
5—1— Fault LEDAFI
6—2— Ouput LEDInput terminals
7—3— Input LEDEjector lever
4—ESD grounding point
Airflow Direction in Power Supplies
Each power supply has two fan supplies and is cooled by its own internal cooling system.
The power supplies either have labels on the handles that indicate the direction of airflow or they have
color-coded handles with a fan icon. AIR IN (AFI) label or a blue-colored handle indicates back-to-front
airflow while AIR OUT (AFO) label or a gold-colored handle indicates front-to-back airflow. See
Figure 25 on page 52
51

Juniper EX4650 Series Specifications

General

Cooling	Front-to-back or back-to-front airflow
Rack Units	1U
MAC address table size	288, 000 entries
Memory	16 GB
Storage	64 GB SSD
Power Supply	Dual redundant, hot-swappable
Junos OS	Supported
Jumbo frames	9216 bytes
Operating temperature	0°C to 40°C (32°F to 104°F)
Input voltage	AC: 100-240V
Fans	Hot-swappable, redundant
Operating humidity	5% to 90% (non-condensing)
Ports	48 x 10GbE SFP+/SFP28 ports 8 x 40GbE QSFP+/100GbE QSFP28 ports