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KTD-N0882-H Page 44 Internal Connectors

KTQ87/KTH81 Users Guide

7.7 USB Connectors (USB)

The KTQ87 board contains two EHCI (Enhanced Host Controller Interface) host controllers (EHCI1 and

EHCI2) and a XHCI (Extensible Host Controller Interface). The EHCI controllers support up to fourteen USB

2.0 ports allowing data transfers up to 480Mb/s and the XHCI controller supports up to six USB 3.0 ports

allowing data transfers up to 5Gb/s. Four of the USB 3.0 ports are shared with four of the USB 2.0 ports

(USB0 – USB3).

Note: Not all USB 2.0 and USB 3.0 ports are physically connected to the board.

Legacy Keyboard/Mouse and wakeup from sleep states are supported. Over-current detection on all

fourteen USB ports is supported.

Notes:

On KTQ87, the four USB 3.0 ports (USB0 – USB3) are shared with four of the EHCI1 USB 2.0 ports.

On KTH81, the two USB 3.0 ports (USB0 – USB1) are shared with two of the EHCI1 USB 2.0 ports.

KTH81 only supports two USB 3.0 ports.

See chapter “USB Connectors (IO Area)” for more information on USB0 – USB3.

The following USB ports are available on Internal Pinrows:

USB 4 & 5 (via EHCI1) are supplied on USB4/5 internal pinrow connector (USB1).

USB 6 & 7 (via EHCI1) are supplied on USB6/7 internal pinrow connector (USB2). (KTQ87/Flex only).

USB 8 & 9 (via EHCI2):

Flex: are supplied on the USB8/9 internal pinrow connector (USB3).

mITX: USB8 is supplied on the mPCIe slot and USB9 is supplied on mSATA slot.

USB Port 10 and 11 (via EHCI2) are supplied on the USB10/11 internal pinrow FRONTPNL connector.

Note: It is required to use only HiSpeed USB cable, specified in USB2.0 standard:

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