Usb; Usb 1.1 Port Configuration - Intel D850MVSE Specification

1.8.2 USB

The following sections describe the USB port configurations implemented on the
D850MD/D850MV boards.
NOTE
Computer systems that have an unshielded cable attached to a USB port may not meet FCC
Class B requirements, even if no device is attached to the cable. Use shielded cable that meets the
requirements for full-speed devices.
For information about
The location of the USB connectors on the back panel
The signal names of the back panel USB connectors
The location of the front panel USB connector
The signal names of the front panel USB connector
The USB specifications, OHCI, and EHCI
1.8.2.1 USB 1.1 Support
The D850MD/D850MV boards support up to seven USB ports, as shown in Figure 7. The ICH2
provides four ports:
Two ports implemented with stacked back panel connectors, adjacent to the PS/2 connectors
One port accessible through a CNR add-in card
One port routed to the SMSC USB hub
The onboard SMSC USB hub provides four ports:
Two ports implemented with stacked back panel connectors, adjacent to the audio connectors
Two ports routed to the front panel USB connector
For more than seven USB devices, an external hub can be connected to any of the ports.
82801BA
I/O Controller Hub
(ICH2)
USB
SMSC LPC47M142
LPC Bus
I/O Controller
USB USB ports (2)
USB CNR connector
USB USB ports (2)
USB USB ports (2)
Figure 7. USB 1.1 Port Configuration
Product Description
Refer to
Figure 12, page 54
Table 20, page 55
Figure 17, page 70
Table 44, page 71
Section 1.5, page 19
Back panel USB connectors
adjacent to the PS/2 ports
USB port accesible through a USB
connector on an optional CNR add-in card
Back panel USB connectors
adjacent to the audio connectors
Front panel USB
connectors
OM12339
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