Hardware Description 29The front panel contains 48 RJ-45 ports number 1-48. The upper row of ports is marked by odd numbers1-47, and the lower row of ports is marked with even numbers 2-48. In addition, the front panel alsocontains ports G1 - G2 which are fiber ports and ports G3- G4 which are copper ports. Ports G3- G4 caneither be used as stacking ports, or used to forward network traffic in a stand-alone device.There are two buttons on the front panel. The Stack ID button is used to select the unit number.The second button is the Reset Button which is used to manually reset the device. The Reset buttondoes not extend beyond the unit’s front panel surface, so reset by pressing it accidentally is prevented.On the front panel are all the device LEDs.The following figure illustrates the PowerConnect 3548 back panel:Figure 2-4. PowerConnect 3548 Back PanelThe back panel contains an RPS connector, console port and power connector.SFP PortsThe Small Form Factor Plugable (SFP) ports are fiber transceivers designated as 10000 Base-SX or LX.They include TWSI (Two-Wire Serial Interface) and internal EPROM.RS-232 Console PortOne DB-9 connector for a terminal connection is used for debugging, software download etc.The default baud rate is 9,600 bps. The baud rate can be configured from 2400 bps up to 115,200 bps.Figure 2-5. Console PortConsole Port RPS Connector Power Connector
