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AT-MR912TX Installation Manual

Stacked Installation

AT-MR912TX-19A, AT-MR912TX-29A and AT-MR912TX-39A models are

designed to interoperate with similar models in a stacked hub conﬁguration

using ATI’s AT-MR901 Stacking Module.

In a stacked conﬁguration, all hubs in the stack logically appear to your

network as a single hub. This conﬁguration will, subsequently, support up to

72 network nodes.

You cannot connect a standalone AT-MR912TX hub in a stacked conﬁguration

unless it has ﬁrst been upgraded. To upgrade an AT-MR912TX, you must

install an AT-MR901 Stacking Module in the back panel of each unit.

AT-MR901 Stacking Module

An AT-MR901 Stacking Module upgrade package includes the following:

❑ AT-MR901 Stacking module

❑ SCSI II Stacking cable

❑ Stacking brackets and four (4) panhead screws with lock washers

Installing an AT-MR901 Stacking Module

1. Ensure that your AT-MR912TX is not connected to a power source.

Note

Electrostatic Discharge Precautions. Static electricity can

damage electronic components of a computer or optional equipment.

To prevent electrostatic damage, observe the following precautions:

Avoid hand contact by transporting and storing products in static-

safe containers.

Keep electro-sensitive parts in their containers until they arrive at

static-free workstations.

Place parts on a grounded surface before removing them from their

containers.

Avoid touching pins, leads, or circuitry and always be properly

grounded when touching a static-sensitive component or assembly.

2. Remove the four screws holding the blank AT-MR901 faceplate on the back

panel of each AT-MR912TX hub and store this faceplate for future use.

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Allied-telesis AT-MR912TX Manual de usuario Pagina 41