Western Digital WD800U017 User Manual - Page 61

How do I determine whether or not my system supports USB 3.0 or USB 2.0?

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MY PASSPORT USER MANUAL Q: How do I determine whether or not my system supports USB 3.0 or USB 2.0? A: Refer to your USB card documentation or contact your USB card manufacturer. Note: If your USB 3.0 or USB 2.0 controller is built in to the system motherboard, be sure to install the appropriate chipset support for your motherboard. Refer to your motherboard or system manual for more information. Q: What happens when a USB 3.0 or USB 2.0 device is plugged into a USB 1.1 port or hub? A: USB 3.0 and USB 2.0 are backward-compatible with USB 1.1. When connected to a USB 1.1 port or hub, a USB 3.0 or USB 2.0 device operates at the USB 1.1 full speed of up to 12 Mbps. If your system includes a PCI Express slot, you can achieve USB transfer rates by installing a PCI Express adapter card. Contact the card manufacturer for installation procedures and more information. TROUBLESHOOTING - 56

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MY PASSPORT
USER MANUAL
TROUBLESHOOTING
– 56
Q:
How do I determine whether or not my system supports USB 3.0 or USB 2.0?
A:
Refer to your USB card documentation or contact your USB card manufacturer.
Note:
If your USB 3.0 or USB 2.0 controller is built in to the system motherboard,
be sure to install the appropriate chipset support for your motherboard.
Refer to your motherboard or system manual for more information.
Q:
What happens when a USB 3.0 or USB 2.0 device is plugged into a USB 1.1 port or
hub?
A:
USB 3.0 and USB 2.0 are backward-compatible with USB 1.1. When connected to a
USB 1.1 port or hub, a USB 3.0 or USB 2.0 device operates at the USB 1.1 full speed
of up to 12 Mbps.
If your system includes a PCI Express slot, you can achieve USB transfer rates by
installing a PCI Express adapter card. Contact the card manufacturer for installation
procedures and more information.