10
USB DIRECTOR/4-PORT HUB
2. Introduction

2.1 Overview

The USB Director/4-Port Hub is a medium-speed and
standalone universal serial bus (USB) hub. The USB
Director/4-Port Hub supplies four additional USB ports
to attach devices and/or additional hubs. The hubs can
easily be daisychained, up to five hubs deep in series,
in any combination that does not exceed 127 devices,
including the hubs. No additional software is required
to support the Hub.
Two models are available: the IC165A includes a
110-VAC power supply and the IC165AE comes with
a 220-VAC power supply.
The Hub is compatible with the USB Version 1.0
specification and supports the power-saving Suspend,
Resume, and Remote wake-up operations.
NOTE
The USB specification does not allow for a bus-
powered hub to drive another bus-powered hub. That
is, two bus-powered hubs must be separated with a
self-powered hub.