ZyXEL XGS-4728F User Guide - Page 44
External Backup Power Supply Connector, Console Port
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Chapter 3 Hardware Overview 1 Use a screwdriver to loosen the terminal block captive screws. 2 Connect one end of a power wire to the Switch's RTN (return) pin and tighten the captive screw. 3 Connect the other end of the power wire to the positive terminal on the power supply. 4 Connect one end of a power wire to the Switch's -48V (input) pin and tighten the captive screw. 5 Connect the other end of the power wire to the negative terminal on the power supply. 6 Insert the terminal block plug in the Switch's terminal block header. 3.2.6 External Backup Power Supply Connector The Switch supports external backup power supply (BPS). The Switch constantly monitors the status of the internal power supply. The backup power supply automatically provides power to the Switch in the event of a power failure. Once the Switch receives power from the backup power supply, it will not automatically switch back to using the internal power supply even when the power is resumed. 3.2.7 Console Port For local management, you can use a computer with terminal emulation software configured to the following parameters: • VT100 terminal emulation • 9600 bps • No parity, 8 data bits, 1 stop bit • No flow control Connect the male 9-pin end of the RS-232 console cable to the console port of the Switch. Connect the female end to a serial port (COM1, COM2 or other COM port) of your computer. 44 XGS-4526/4528F/4728F User's Guide