Juniper MX204 Hardware Manual page 22

NOTE:
The interface name prefix must be xe.
Rate selectability at PIC level and port level does not support 1-Gbps speed.
For the link to come up, you must configure the no-auto-neg statement on the egress interface.
NOTE: For a complete list of supported optics on MX204, see
The router comes in two variants–AC-powered and DC-powered.
Figure 4 on page 24 shows the rear of the fully configured chassis.
Figure 3: Rear View of the AC-Powered MX204 Router
1 Fan modules
—
Figure 4: Rear View of the DC-Powered MX204 Router
1 Fan modules
—
The electrostatic discharge (ESD) points on the router are located both on the front and on the rear of the
chassis. Figure 5 on page 25
CAUTION:
point, and place the other end of the strap around your bare wrist. Failure to use an ESD
strap could result in damage to the hardware components.
1
1
shows the electrostatic discharge (ESD) point on the router.
Before removing or installing components, attach an ESD strap to an ESD
MX204 Transceivers.
Figure 3 on page 24
2
2 Power supply modules (AC)
—
2
2 Power supply modules (DC)
—
and
24