Installing the Model 281xSA Hub
2-10
893-743-A
Wall Installation
In a wall installation, the Model 281xSA hub must be mounted on a wooden
surface. Make sure half-inch plywood is securely attached to the wall where
you intend to install the hub.
To install the Model 281xSA hub on a wall, follow these steps:
1.
Attach the mounting brackets.
a. Using a #1 Phillips screwdriver, remove the two bottom screws on
each side of the hub (see Figure 2-9).
Figure 2-9. Attaching brackets for wall mounting
b. Hold a mounting bracket against each side of the hub where you
removed the screws, as shown in Figure 2-9, and align the countersunk
screw holes in the bracket with the bracket mounting holes in the hub.
c. Insert two #4-40 x 5/16 flat-head screws through each bracket and into
the bracket mounting holes in the hub cabinet (see Figure 2-9).
d. Using a #1 Phillips screwdriver, tighten the screws to secure each
bracket.
NOTE:
You must supply four #12 x 5/8 pan-head Phillips sheet metal screws
for wall mounting the Model 281xSA hub.
MDI-X
MDI-X/MDI
AUI Port
1
2
3
4
5
6
7
8
9
10
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12
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16
Link
Part
AUI
Partition
Power
NM
Control Isolate
Data <Data>
Col
µP Fault
On Line
RS-232
Service Port
Net
tor
®
Remove
screws
2
3
4
5
Expansion
Reset
System Operation
Int
4647