G900X/G950 Installation and Maintenance Manual – Pinouts Page A-77190-00719-00 Revision DA.9 GDL 69(A) (optional)A.9.1 P691 ConnectorView of J691 connector looking at rear of unit.1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 2021 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 3940 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 5960 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78Pin Pin Name I/O1 Config Module Ground Out2 RS-232 Out 2 Out3 RS-232 Out 3 Out4 Signal Ground --5 RS-232 In 2 In6 RS-232 In 3 In7 RS-232 In 1 In8 RS-232 Out 1 Out9 Data Link System ID Program 1 In10 Data Link System ID Program 2 In11 Signal Ground --12 Spare --13 Signal Ground --14 Spare --15 Spare --16 Spare --17 Audio Out Low --18 Audio Out Right Out19 Audio Out Left Out20 Power Ground --21 Config Module Power Out Out22 Ethernet In 1 B In23 Ethernet In 1 A In24 Ethernet Out 1 B Out25 Ethernet Out 1 A Out26 Ethernet In 2 B In27 Ethernet In 2 A In28 Ethernet Out 2 B Out29 Ethernet Out 2 A Out30 Ethernet In 3 B In31 Ethernet In 3 A In32 Ethernet Out 3 B Out33 Ethernet Out 3 A Out34 Spare --35 Aircraft Power 1 In36 Spare --37 Aircraft Power 2 In