20 | Install the S55
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Insert optional modules
The S55 system has expansion slots, that can be used for stacking modules or for SFP+ devices.The SFP+
module can be inserted in either optional slot; the stacking module can only be inserted in the lower slot
(OPT0). The modules are hot-swappable; you can insert or replace modules without powering down the
system.
CAUTION: Stacking modules can only be inserted into the lower optional module slot.
WARNING: Electrostatic discharge (ESD) damage can occur if components are mishandled. Always wear an
ESD-preventive wrist or heel ground strap when handling the S55 and its components.
3 Attach the one-hole lug to the chassis as shown, using the supplied 10-32 screw with captive internal tooth lock
washer. The screw should be torqued to 20 in-lbs.
4 Attach the other end of the ground cable to a suitable ground point. The rack installation ears are not a suitable
grounding point.
Module Description Catalog Number
2-port 12G stacking module S55-12G-2ST
2-port 10G SFP+ optical module S55-10GE-2S
Step Task (continued)
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