Allied Telesis AT-2746FX - Manual (Page 48)

Chapter 2: Installing a Network Adapter Card
48
Installing the Low Profile Bracket
The AT-2451FTX, AT-2701FX, AT-2701FTX and AT-2746FX Series
network adapter cards come with two brackets, a pre-installed standard
bracket and a low profile bracket for systems that require low profile
adapters. If you are installing the card in a low profile system, you must
replace the standard bracket on the card with the low profile bracket.
Replacing the bracket must be performed with extreme care to avoid
damaging the network adapter card.
Caution
Wear a grounding device and observe electrostatic discharge
precautions when installing the bracket. Failure to observe this
caution could result in damage to the network adapter card.