Acer Aspire 7730G Aspire 7730/7730G/7730Z/7730ZG Service Guide - Page 149

USB Failure (Rightside) If the rightside USB port fails, perform the following actions one at a time to correct the problem. Do not replace a non-defective FRUs: Modem Function Failure If the internal Modem fails, perform the following actions one at a time to correct the problem. Do not replace a non-defective FRUs: Chapter 4 139