HP Pavilion dv1400 Hardware and Software Guide - Page 125

Connecting a USB Device, Powered hubs must be connected to external power.

Page 125 highlights

Hardware Upgrades and Replacements Connecting a USB Device A device connected to the notebook by USB can be used only when the notebook is in Windows. USB (Universal Serial Bus) is a hardware interface that can be used to connect an external device such as a USB keyboard, mouse, drive, printer, scanner, or hub to the notebook or an optional docking device. A hub is a connecting device that can be either powered or unpowered. USB hubs can be connected to a USB port on the notebook or to other hubs. Hubs support varying numbers of USB devices and are used to increase the number of USB devices in the system. ■ Powered hubs must be connected to external power. ■ Unpowered hubs must be connected either to a USB port on the notebook or to a port on a powered hub. The 3 USB ports on the notebook support USB 2.0-compliant, USB 1.1-compliant, and USB 1.0-compliant devices. 7-2 Hardware and Software Guide

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7–2
Hardware and Software Guide
Hardware Upgrades and Replacements
Connecting a USB Device
A device connected to the notebook by USB can be used only
when the notebook is in Windows.
USB (Universal Serial Bus) is a hardware interface that can be
used to connect an external device such as a USB keyboard,
mouse, drive, printer, scanner, or hub to the notebook or an
optional docking device.
A hub is a connecting device that can be either powered or
unpowered. USB hubs can be connected to a USB port on the
notebook or to other hubs. Hubs support varying numbers of
USB devices and are used to increase the number of USB devices
in the system.
Powered hubs must be connected to external power.
Unpowered hubs must be connected either to a USB port
on the notebook or to a port on a powered hub.
The 3 USB ports on the notebook support USB 2.0-compliant,
USB 1.1-compliant, and USB 1.0-compliant devices.