Technical Product Specification

Product Description
21
1.7.2 PCI Express x16 Graphics
The Intel Core i7, Intel Core i5, Intel Core i3, and Intel Pentium processors in an
LGA1155 socket support discrete add in graphics cards through the PCI Express 2.0
x16 graphics connector:
• Supports PCI Express GEN2 frequency of 2.5 GHz resulting in 5.0 Gb/s each
direction (500 MB/s) per lane. Maximum theoretical bandwidth on interface is
8 GB/s in each direction, simultaneously, when operating in x16 mode.
• Supports PCI Express GEN1 frequency of 1.25 GHz resulting in 2.5 Gb/s each
direction (250 MB/s) per lane. Maximum theoretical bandwidth on interface is
4 GB/s in each direction, simultaneously, when operating in x16 mode.
For information about Refer to
PCI Express technology http://www.pcisig.com
1.8 USB
The board supports up to ten USB 2.0 ports and two USB 3.0 ports.
The Intel Q67 Express Chipset provides the USB controller for the 2.0 ports. The two
USB 3.0 ports are provided by the NEC* UPD720200 controller. The port arrangement
is as follows:
• Two USB 3.0 ports are implemented with stacked back panel connectors (blue)
• Four USB 2.0 ports are implemented with stacked back panel connectors (black)
• Six USB 2.0 front panel ports implemented through three internal headers
All 12 USB ports are high-speed, full-speed, and low-speed capable. The USB 3.0 ports
are super-speed capable.
NOTES
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 a shielded
cable that meets the requirements for full-speed devices.
In order to use supported USB 3.0 features, you must first install the USB 3.0 drivers.
Operating system installation may be interrupted if keyboard and mouse devices are
connected to the SuperSpeed USB 3.0 ports (blue) during installation due to the lack of
native USB 3.0 driver support from the operating system.
For information about Refer to
The location of the USB connectors on the back panel Figure 9, page 46
The location of the front panel USB headers Figure 10, page 47
Obtaining USB 3.0 software and drivers Section 1.3, page 16