System components are labeled as follows, starting in the top left corner, going in a counter-clockwise direction: power supply; SCSI hard disk drives; DVD/CD-ROM/FDD module; tape drive (optional); front panel board; fan module; SCSI backplane (shown horizontally for clarity); server board. Connections are labeled as follows, starting left and moving generally right: To backplane power connector from power supply; to server board primary power connector

from power supply; floppy/FP/IDE flex circuit cable from server board to backplane; SCSI cable from server board to backplane; USB ribbon cable from front panel board to server board; ribbon cable from front panel board to backplane; fan module to server board fan connectors (2); to server board auxiliary signal connector from power supply; to server board auxiliary power connector from power supply, serial cable from server board to knockout on back of chassis (optional).