16 About Your SystemUsing USB Diskette or USB CD DrivesEach server module has a USB port on the front of the server module which allows you to connect acustom cable for a diskette drive or USB CD drive. The USB drives are used to configure the servermodule.NOTICE: The system supports only Dell-branded USB 1.1 or USB 2.0 drives. The drive must be horizontal and levelto operate properly.NOTE: If the drive must be designated as the boot drive, connect the USB drive, restart the system, then enter theSystem Setup Program and set the drive as first in the boot sequence (see "Using the System Setup Program" onpage 43). The USB device will be displayed in the boot order setup screen only if it is attached to the system beforeyou run the System Setup program.Hard-Drive FeaturesEach server module supports one or two hot-pluggable SAS hard drives, or one or two hot-pluggableSATA hard drives. See Figure 1-4 and Table 1-3 for information on the hard-drive indicators. Differentpatterns are displayed as drive events occur in the system.NOTICE: Each server module must have a hard drive or a hard-drive blank installed in each hard-drive bay.NOTICE: You cannot install a SAS drive and a SATA drive within a given server module (blade). However, you caninstall server modules (blades) with SAS drives and server modules with SATA drives in the same server enclosure.Network indicators Off Indicates that the server module does not have a link to theEthernet switch or pass-through module.Green on Indicates that the server module has a valid link to thenetwork switch module.Green blinking Indicates network activity between the server module andthe network switch module.NOTE: External network activity is not reported by thisindicator.NOTE: This network indicator may also blink green due tosystems management activity if you use the integrated NIC toremotely access your system’s Baseboard ManagementController (BMC). See "Baseboard Management ControllerConfiguration" on page 54.USB/videoconnectorNone Use the custom cable to connect external USB devices andvideo to the server module.Table 1-2. Server Module Features and Indicators (continued)Indicator Icon Activity Indicator Indicator Code