Figure 11. S4048-ON front-rack conguration
Ground cable
Dell recommends grounding your system. To attach the ground cable to the chassis, use a single M4x0.7 screw.
The cable itself is not included with the S4048–ON. To properly ground the chassis, Dell Networking recommends using a 6 AWG one-hole
lug, #10 hole size, 63" spacing, not included in shipping. The one-hole lug must be a UL recognized, crimp-type lug.
CAUTION
: Grounding conductors
must
be made of copper. Do not use aluminum conductors.
NOTE: The rack installation “ears” are not suitable for grounding.
NOTE: Coat the one-hole lug with an anti-oxidant compound prior to before crimping. Also, bring any unplated mating surfaces
to a shiny nish and coat with an anti-oxidant prior to mating. Plated mating surfaces must be clean and free from
contamination.
To connect the ground cable to the system, follow these steps.
1 Cut the ground cable to the desired length. The cable length must facilitate proper operation of the fault interrupt circuits. Dell
recommends using the shortest cable route allowable.
2 Take the one M4x0.7 screw from the package.
3 Attach the one-hole lug to the chassis using the supplied 10-32 screw with the captive internal tooth lock washer. Torque the screw 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.
SFP+ and QSFP+ optic installation
The S4048–ON has six quad small form-factor pluggable plus (QSFP+) optical ports.
For a list of supported optics, refer to the S4048–ON data sheet at www.dell.com/support or contact your Dell Networking representative.
S4048–ON installation
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