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B-2 APPENDIX B: SPECIFICATIONSRJ-45 Connector Pin AssignmentsFigure B-1 shows the RJ-45 connector pin assignments.Figure B-1 RJ-45 Connector Pin AssignmentsAUI Connector Pin AssignmentsTable B-1 lists the pin assignments for the AUI (attachmentunit interface) connector.R D +R D –1234512345678T D +T D –678Table B-1 AUI Connector Pin AssignmentsPin Function Pin Function1 Collision shield 9 Collision –2 Collision + 10 Transmit –3 Transmit + 11 Transmit shield4 Receive shield 12 Receive –5 Receive + 13 +12 volts6 Power return 14 Voltage shield7 Not used 15 Not used8 Not used