Juniper E Series Hardware Manual page 22

ERX 7.0.x Hardware Guide
Internally, the ERX-1440 chassis differs from the ERX-1410 chassis, and
includes a special midplane for the 40-Gbps SRP module.
Installation procedures and operating procedures are identical for both
systems. All ERX-7xx/14xx models use the same SRP I/O module, but
different power input modules are used.
NOTE: The router may look different from the routers shown in the figures in this
chapter, depending on the line modules in the slots.
Figure 4: ERX-14xx Model, Front View
6
E-series Routers
Fan tray
behind bezel
Line module
SRP module
PCMCIA slot
Air filter (optional)
behind bezel
Bezel
Cable
management
bracket