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3-1
3
Installing removable components
This section describes the installation procedures for the supervisor engine units (SEUs, also called
MPUs), interface modules, fan trays, and power supplies. For the compatibility matrix between
these modules and the switch models, see
H3C S12500X-2L Switch Installation Guide .
WARNING!
Long-time exposure to strong air flow might cause discomfort. As a best practice, do not stand
close to the air outlet vents while the switch is operating. If you must be next to the switch on the air
outlet vent side for an extended period, avoid the air flow or take other protective measures.
CAUTION:
For good ventilation of the switch, install filler panels in the empty module and power supply slots.
Attaching an ESD wrist strap
To prevent ESD damage, always wear an ESD wrist strap when working with any component of the
switch. Make sure the wrist strap makes good skin contact and is reliably grounded. See
Figure 1-1
for attaching an ESD wrist strap.
Installing and removing SEUs
CAUTION:
•
If you are not to install an SEU in an SEU slot, keep the filler panel in the slot.
•
When you install an SEU, avoid damaging the connectors on the SEU.
You can install one SEU, or two SEUs for redundancy on the switch. If you are to install one SEU,
install it in either of the SEU slots.
Installing an SEU
1. As shown by callout 1 in Figure 3-1 , remove the filler panel from the target SEU slot.
Keep the removed filler panel secure for future use.
2. As shown by callout 2 in Figure 3-1 , press the latch on the SEU to release the ejector lever.
Rotate outward the ejector lever to the outmost.
3. As shown by callout 3 in Figure 3-1 , orient the SEU with the upside up. Hold the SEU by the
front panel with one hand and support the bottom with the other. Push the SEU steadily into
the slot along the guide rails until it has firm contact with the slot.
Keep the SEU parallel to the slot to avoid touching other components in the chassis.
4. As shown by callout 4 in Figure 3-1 , rotate inward the ejector lever until the latch locks the
ejector lever in place.