Usb; Sata Interfaces - Intel DQ77MK User Manual

Intel Desktop Board DQ77MK Technical Product Specification
1.5.3

USB

The PCH contains up to two Enhanced Host Controller Interface (EHCI) host controllers
that support USB high-speed signaling. High-speed USB 2.0 allows data transfers up to
480 Mb/s. All ports are high-speed, full-speed, and low-speed capable.
The PCH also contains an integrated eXtensible Host Controller Interface (xHCI) host
controller which supports USB 3.0 ports. This controller allows data transfers up to
5 Gb/s. The controller supports SuperSpeed (SS), high-speed (HS), full-speed (FS),
and low-speed (LS) traffic on the bus.
The board supports up to four USB 3.0 ports and ten USB 2.0 ports.
The Intel Q77 Express Chipset provides the USB controller for the 2.0/3.0 ports. The
port arrangement is as follows:
Two USB 3.0 ports are implemented with stacked back panel connectors (blue)
•
Two front panel USB 3.0 ports are implemented through one internal connector
•
(blue)
Four USB 2.0 ports implemented with stacked back panel connectors (two black
•
and two orange high current charging ports)
• Four USB 2.0 front panel ports implemented through two internal headers (black)
Two USB 2.0 ports are implemented in the PCI Express Full-/Half–Mini Card slot
•
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 a
shielded cable that meets the requirements for full-speed devices.
For information about
The location of the USB connectors on the back panel
The location of the front panel USB headers
1.5.4

SATA Interfaces

The board provides six SATA connectors, through the PCH, which support one device
each:
Two SATA 6.0 Gb/s interfaces through the Intel Q77 Express Chipset with Intel
•
Rapid Storage Technology RAID support (blue)
Two internal SATA 3.0 Gb/s interfaces through Intel Q77 Express Chipset with Intel
•
Rapid Storage Technology RAID support (black)
One internal SATA connector (multiplexed with an mSATA port, routed to the PCI
•
Express Full-/Half-Mini Card slot) (gray)
• One external eSATA 3.0 Gb/s interface (red)
The PCH provides independent SATA ports with a theoretical maximum transfer rate of
6.0 Gb/s for two port and 3.0 Gb/s for four ports. A point-to-point interface is used for
host-to-device connections.
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Refer to
Figure 10, page 50
Figure 11, page 51
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