Avaya ERS 3500 Series Fundamentals page 73

Figure 27: ERS 3510GT/3510GT-PWR+ Standard rack mount bracket position
Figure 28: ERS 3510GT/3510GT-PWR+ Hinged mating bracket folded view
Figure 29: Rear Bracket to connect two ERS 3510GT or two 3510GT-PWR+ switches
Fundamentals of ERS 3500 Series March 2014 73