MRV Communications MR2228-S2C - Manual (Page 23)

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Figure 3-7. Power Receptacles
2. Plug the other end of the cable into a grounded, 3-pin socket, AC power source.
Note: For International use, you may need to change the AC line cord. You must
use a line cord set that has been approved for the receptacle type in your country.
3. Check the front-panel LEDs as the device is powered on to be sure the PWR
LED is lit. If not, check that the power cable is plugged in correctly
4. If you have purchased a Redundant Power Unit, connect it to the switch and to
an AC power source now, following the instructions included with the package.
Connecting to the Console Port
The DB-9 serial port on the switch’s back panel is used to connect to the switch
for out-of-band console configuration. The command-line-driven configuration
program can be accessed from a terminal or a PC running a terminal emulation
program. The pin assignments used to connect to the serial port are provided in
the following table.
Figure 3-8. Serial Port (DB-9 DTE) Pin-Out
Wiring Map for Serial Cable