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Troubleshooting, Specifications – Dynex DX-HUB23 User Manual

Page 5

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Troubleshooting

5

Troubleshooting

• Connect your USB device to the hub only after the auto-installation is

complete.

• USB 2.0 performance (high speed of up to 480 Mbps) can only be expected

when the hub is connected to your computer’s USB 2.0 port and the
connected USB peripherals are USB 2.0 compliant.

• Though the hub comes with a DC IN power jack, in most cases, a power

adapter is not required. If your USB peripheral (e.g., USB scanner or printer)
is power demanding, then the USB peripheral should always be connected
to its provided power adapter.

• If “USB Hub Power Exceeded” message appears, the hub’s over-current

protection will automatically disconnect power to the hub. This problem
usually occurs when an attached USB peripheral demands more power than
the hub can provide. To solve this problem, disconnect the affected USB
peripheral and re-connect the peripherals and hub.

Note: Make sure the affected USB peripheral has enough power by connecting its

provided power adapter to it.

Specifications

USB Interface

USB 2.0, USB 1.1 compliant

LED

Power - logo illuminates blue

Power mode

Bus-powered mode (without power adapter connected)

Speed

480/12/1.5 Mbps, auto-negotiation

Connector/Ports

1 upstream connector and 4 downstream ports
DC IN connector (5V 2.5A)

Supported OS

Windows 98SE, Windows ME, Windows 2000, Windows
XP, Windows Vista, Server 2003, Mac OS 8.6 or above.

Compliance

ACPI, OHCI, and EHCI compliant

Power consumption

100mA per port in bus-powered mode

Power management

Active mode: 80mA (max, sleep mode: under 45 uA

Over-current protection

Community mode (for all downstream ports) at 2.5A

Housing materials

ABS