Cisco Systems Catalyst 3550 warranty Using the ratcheting torque screwdriver

Step 4	Using the ratcheting torque screwdriver,
	torque each terminal block captive screw
	(above the installed wire leads) to 4.5 lbf-in.
	(72 ozf-in.).	Return	Feed A
		Negative
		Return	Feed B
		Negative
Step 5	Insert the terminal block plug in the terminal
	block header on the rear panel of the switch.
	36 -
	1	72V
		- 0.5A
		A
		B

Step 6 Move the circuit-breaker handle for the DC power source to the on position.

Caution You must connect the Catalyst 3550-24-DC switch only to a DC-input power source that has an input supply voltage from –36 to –72 VDC. If the supply voltage is not in this range, the switch might not operate properly or might be damaged.

19