Allied Telesis AT-SBx81CFC960 - Manual (Page 165)

SwitchBlade x8112 Chassis Switch and AT-SBx81CFC960 Card Installation Guide
Section II: Installing the Chassis 165
Note
To protect the controller card from dust contamination, do not
remove the dust plug from a transceiver slot until you are ready to
install the transceiver.
2. If you are installing the SFP+ transceiver in slot 1 or 3, orient it with the
handle on top, as shown in Figure 104. To install it in slot 2 or 4, orient
it with the handle on the bottom.
Figure 104. Handle on an SFP+ Transceiver
3. Slide the transceiver into the slot until it clicks into place, as shown in
Figure 105.
Figure 105. Installing an SFP+ Transceiver in the AT-SBx81CFC960
Controller Fabric Card
Handle