Acer Aspire X3990 Acer Aspire X3990 Desktop Service Guide - Page 88

Checking Connector, Connecting Optional Devices

Page 88 highlights

Checking Connector Connecting Optional Devices F_AUDIO: Front Panel Audio heade This header allows the user to install auxiliary front-oriented microphone and line-out ports for easier access. Pin Signal Name 1 PORT-F_L 3 PORT-F_R 5 PORT-E_R 7 SenseB 9 PORT -E_L Pin Signal Name 2 AUGND 4 AUD_FP_DET 6 F_R_A 8 NC 10 F_L_A GPIO1~2: Button recovery jumper Pin Signal Name 1 GP36(GP16) 2 GND Chapter 5 80

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