Juniper EX4500 Hardware Manual page 22

Figure 2: EX4500 Switch Rear with Intraconnect Module Installed
AC power Intraconnect
supply module
Fan tray
Figure 3: EX4500 Switch Rear with Virtual Chassis Module Installed
EX4500 switches are available in models with either front-to back airflow or back-to-front airflow and
hardware that either supports or does not support Data Center Bridging (DCB), also known as Converged
Enhanced Ethernet (CEE). See
10-gigabit small form-factor pluggable (SFP+) network ports that can house either 1-Gigabit Ethernet
transceivers or 10-Gigabit Ethernet transceivers. All models support two optional high-speed uplink
modules.
To provide carrier-class reliability, EX4500 switches include:
Dual redundant, load-sharing power supplies that are hot-insertable and hot-removable field-replaceable
units.
An FRU fan tray with five fans. The switch remains operational if a single fan fails.
Fan tray handle
"EX4500 Switch Models" on page 25. All eight models provide 40 wire-speed
22