IEI Integration PCIE-Q350 v1.12 - Manual (Page 50)

PCIE-Q350 PICMG 1.3 CPU Card
Page 29
devices can be connected to the PCIE-Q350. EHCI controllers facilitate data transfer
speeds of 480 Mbps
Port routing logic on the ICH9DO determines whether a UHCI or an EHCI controller
controls a USB port.
2.5.11.2 PCIE-Q350 USB Implementation
Only eight of the Intel® ICH9DO USB ports are implemented on the PCIE-Q350. Two
USB ports (USB Port 1 and USB Port 2) are connected to two external connectors and six
USB ports (USB Port 3 to USB Port 8) are connected to three 8-pin onboard pin-headers.
See Figure 2-12.
Figure 2-12: Onboard USB Implementation
2.5.11.3 Backplane USB Implementation
The remaining four Intel® ICH9DO USB ports (USB Port 9 to USB Port 8) are interfaced to
the backplane through the USB edge connector on the bottom of the CPU card. See
Figure 2-13. These four remaining USB ports are implemented through connectors on the
backplane.