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S4100–ON Series S4128F-ON, S4148F-ON, and S4148FE Installation Guide November 2017

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Components

The following power supply options are available for the S4100-ON Series (S4128F-ON, S4148F-ON, and S4148FE-ON) switch:

  • AC or DC power supply with integrated fan
  • AC or DC power supply with integrated reverse flow fan

Power supply 1 (PSU1) is on the left side of the switch; power supply 2 (PSU2) is on the right side of the switch.

Figure 1. S4100-ON Series PSUsIllustration of the S4100F–ON Series PSUs.
  1. PSUs

The PSUs have an integrated fan that you cannot replace individually; if the fans integrated in a PSU fail, you must replace the entire PSU. You can replace the fan trays individually. For fan tray replacement procedures, see Fans.

  • WARNING: Prevent exposure and contact with hazardous voltages. Do not attempt to operate this switch with the safety cover removed.
  • CAUTION: Remove the power cable from the PSU before removing the PSU. Also, do not connect the power cable before you insert the PSU in the switch.
  • NOTE: To comply with the GR-1089 Lightning Criteria for Equipment Interfacing with AC Power Ports, use an external surge protection device (SPD) at the AC input of the router.

PSU LEDs

  • Solid green—Input is OK.
  • Flashing yellow (amber)—There is a fault with the PSU.
  • Flashing green blink at 1Hz—Switch is in standby/CR state.
  • Off—PSU is off.

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