Acer Altos G520 Altos G520 Service Guide - Page 95

USB Connectors Pin-out (J3) Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Signal Name Fused VCC (+5V /w over current monitor of both port 3) DATAN3 (Differential data line paired with DATAH3) DATAP3 (Differential data line paired with DATAL3) GND Fused VCC (+5V /w over current monitor of both port 2) DATAN2 (Differential data line paired with DATAH2) DATAP2 (Differential data line paired with DATAL2) GND CTS_N DSR_DCD SIN RI_N GND SIUT DTR_N RTS_N Optional USB Connection Header Pin-Out (J31) Pin 1 3 5 7 9 Signal Name Fused VCC (+5V /w over current monitor of both port 1) DATAN1 DATAP1 GND Key Pin 2 4 6 8 10 Singal Name Fused VCC (+5V /w over current monitor of both port 0) DATAN0 DATAP0 GND NC Legacy 34-pin Floppy Connector Pin-out (J47) Pin Signal Name Pin 1 GND 2 3 GND 4 5 KEY 6 7 GND 8 9 GND 10 11 GND 12 13 GND 14 15 GND 16 17 Unused 18 19 GND 20 21 GND 22 23 GND 24 25 GND 26 27 Unused 28 Signal Name FDDENSEL Unused FDDRATE0 FDINDEX# FDMTR0# FDR1# FDR0# FDMTR1# FDDIR FDSTEP# FDWDATA# FDWGATE# FDTRK0# FLWP# Chapter 5 86