Workstation 5A Setup Guide - Fourth Edition 3-17
What’s Inside?
System Board Description
The ICH8M provides most IO support as shown in Figure 3-12.
Figure 3-12: ICH8M I/O Port Summary
USB 2.0 Ports
The ICH8M contains two Enhanced Host Controller Interface (EHCI) host
controllers supporting up to ten USB 2.0 high speed ports. The ICH8M
contains port-routing logic that determines whether a USB port is
controlled by the UHCI (USB 1.1) controller or EHCI (USB 2.0)
controller.
The WS5A System Board includes the ability to disable all external USB
ports including the Powered USB Port.
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