Black Box Modular Switches Manual De Usuario

Black Box Modular Switches           

        Installation and User Guide (8/99) 

24 

internal jumper settings 

Therefore, the default setting of half-duplex ( fiber ports) is generally desirable because it is 

widely used and allows for the connection of various devices without re-configuration.(where the 

connected device is half duplex and does not support full-duplex i.e., Hub and media-converters.) 

Note: For 10Mbps fiber ports, the user can set the jumpers either at full-duplex or half duplex on 

 

The Black-Box LE14XXA-Series Switches incorporate an internal universal power 

supply, and has a recessed male IEC connector for the AC power cord at the left-rear. A manual 

power ON-OFF switch is adjacent. A six-foot 115 VAC 60 Hz standard power cord is supplied 

with each unit shipped within the United States and Canada.         

AC power connector 

 

 

 

The auto-ranging power supply supports installation environments where the AC 

voltage is from 90 to 260 volts with a power input frequency of between 47 and 63 Hz.  The 8-

port units will consume just under 20 watts of power typically, and the 16-port units will 

consume about 35 watts typically.  

 

When connecting the Ethernet cabling, there is no need to power down the unit.  

Individual segments can be connected or disconnected without concern for AC power-related 

problems or damage to the unit. 

 

Power supply options are available to suit the LE14XXA-Series Switches to special 

high-availability communications and/or heavy industrial-grade applications, including: 

   *    -48VDC with single DC input, 

   *    -48VDC with dual-source DC input, 

   *   -48VDC with dual redundant internal power supply units and dual-source DC input,  

   *     AC with dual redundant internal power supply units and dual-source AC input 

ON

O F F

110-220

VAC

47-63Hz

1.0-0.5A