IBM xSeries 380 Hardware Maintenance Manual page 216

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Hardware Maintenance Manual: xSeries 380
On the top of the system, unlatch the LS120 diskette drive cable ( 1 ) and the CD-
ROM drive cable ( 2 ) and fold them over into the I/O bay area.
Disconnect the server management cable ( 1 ) and the SCSI cable ( 4 ) from the
T-Docking Board.
Loosen the captive screw ( 3 ) on the T-docking board top bracket ( 2 ) and
remove the bracket.
Remove the 12-Volt DC-DC converter ( 1 ) from the board by grabbing the two
crossbars and gently pulling the DC-DC converter upward.