CS72D / CS74D User Manual

Hot Plugging

The CS72D / CS74D supports USB hot plugging – components can be removed and added back into the installation by unplugging their cables from the USB hub ports without the need to shut the unit down.

Firmware Upgrade

Refer to The Firmware Upgrade Utility, page 23 for a step-by-step guide on upgrading the firmware. In summary, do the following steps:

1.Push and hold the Port 1 pushbutton located in the unit’s front panel, and power on the unit.

2.Check the front panel LEDs:

ŠThe CS72D front panel LEDs flash to indicate that Firmware Upgrade Mode is in effect

ŠFor CS74D, the front panel LEDs of Port 3 and Port 4 lights steady to indicate that Firmware Upgrade Mode is in effect (the LEDs of Port 1 and Port 2 are off)

3.Update the firmware manually via command line by following the instructions shown on the screen.

Powering Off and Restarting

If it becomes necessary to Power Off the CS72D / CS74D unit, before starting it back up you must do the following:

1.Shut down all the computers that are attached to the switch.

2.Unplug the switch’s power adapter cable.

3.Wait 10 seconds, then plug the switch’s power adapter cable back in.

4.After the switch is up, Power On the computers.

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