Windows message that you have plugged a High Speed Device into a Low Speed Port.

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Article ID
T4303-1600

Last Review
July 23, 2007

Products
SEE2
Warp Drive 2.5"
Warp Drive 3.5"

Firmware Versions
1.37 +

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When using a high speed device, Windows may inform you that you have plugged a Hi-Speed Device into a Low-Speed port.

This message is only received you are have a USB 1.x port, Windows is not fully updated, or your USB hardware drivers are out of date.

Open Device Manager and expand the Universal Serial Bus section. There should be an "Enhanced" USB host controller present.

Windows 98 systems may use a different name, because Hi-Speed USB drivers in these operating systems are not provided directly from Microsoft (Windows ME, 2000 and XP get their drivers through Windows Update).

These drivers are provided by the manufacturer, and may carry the maker's name (i.e. ADS, Belkin, IOGear, Siig, etc.). There should also be two "standard" version USB host controllers present as well. They are embedded in the USB chip which routes the differing USB speeds accordingly without user intervention.

There are currently 6 manufacturers of the Hi-Speed USB host silicon themselves:

ALi (Acer Labs)
Intel
NEC
SiS
VIA
nVidia (shows as "Standard" controller)

Any other brand name that appears in Device Manager would likely be an add-in Hi-Speed USB PCI card. The makers above do not make add-in cards, but they do make the chips that are used in them.

For a general rule, if your PC was manufactured before 1996, it probably does not include USB. If the machine was manufactured in 1997 or later, it may support USB 1.0 . Most computers manufactured after 1998 support USB 1.0. Systems available since 2001 probably support USB 2.0.

With some PCs, you may need to connect an adapter (PCI or CardBus) to connect USB peripherals. Read your system documentation if you're not sure there is a USB port.