StarTech.com ST3504USB User manual

4-Port Front USB Hub
for 3.5” Drive Bay
ST3504USB
The Professiona
USB
Revised: September 19, 2002

FCC COMPLIANCE STATEMENT
This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential installation.
This equipment generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful interference
to radio communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful interference to
radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of the
following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Technical Support
StarTech.com’s lifetime technical suppor
provide industry-leading solutions. If y
www.startech.com/support and access o
documentation, and downloads.
Warranty Information
This product is backed by a lifetime w
products against defects in materials an
following the initial date of purchase. D
returned for repair, or replacement with
warranty covers parts and labor costs o
from defects or damages arising from m
tear.
Limitation of Liability
In no event shall the liability to StarTech
agents) for any damages (whether direct
consequential, or otherwise), loss of pro
arising out of related to the use of the pr
the product.
Some states do not allow the exclusion o
damages. If such laws apply, the limitati
may not apply to you.

Table of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . .
Installation . . . . . . . . . . . . . . . . . . . . . . . .
Monitoring Your USB Hub . . . . . . . . . .
Technical Specifications . . . . . . . . . . . . .
Technical Support . . . . . . . . . . . . . . . . . .
Warranty Information . . . . . . . . . . . . . . .
Monitoring Your USB Hub
The five LEDs on the front of the hub are the best indication of the hub’s activity:
•The four red LEDs indicate activity on each of the four USB ports. Each LED is
numbered to correspond to a port.
•The green PW LED indicates that the hub is properly powered.
Technical Specifications
4
Ports 1 upstream (root), 4 downstream (peripheral)
Output Voltage +5V DC (each port)
Output current 500mA (max) per port
Power Supplied by LP-4 power supply connector
Connectors 4 front USB “A” female
1 rear USB “B” female

Introduction
Thank you for purchasing a StarTech.com four-port front USB hub for 3.5” drive bays.
Now your USB devices like digital cameras, Zip drives, and printers can attach to the
front of your computer, making the connection or removal of your peripherals easy and
hassle-free. The hub can be self- or bus-powered, and provides per-port over-current
detection so your devices are protected.
Features
•Adds four front USB ports to your computer
•Works with USB-compliant Windows or Mac computers
•Supports both Open Host Controller Interface (OHCI) and Universal Host Controller
Interface (UHCI)
•Provides both bus-powered and self-powered modes of operation
•Provides over-current detection for each port
•Backed by StarTech.com’s one-year warranty
Before You Begin
To ensure a quick and easy hub installation, please read through this section carefully
before attempting to install the card.
WARNING! Installing this device requires you to remove your computer’s external
casing. Remember that computer equipment can be severely damaged by static
electricity. Be sure that you are properly grounded before opening your computer case or
touching any internal components. StarTech.com recommends that you wear an anti-
static strap when installing any computer component. If an anti-static strap is
unavailable, discharge yourself of any static electricity build-up by touching a large
grounded metal surface (such as the computer case) for several seconds.
System Requirements
•An IBM-PC running Windows 98 or later, or a USB-capable Mac computer (Consult
your system’s user guide for details, if necessary)
•An open 3.5” drive bay
•An open USB port
2
Contents
This package should contain:
•1x front USB hub
•1x USB “A” (rectangular) male to “B
•1x internal power cable
•1x set of mounting screws
Installation
This section will guide you through the
instructions carefully and complete each
1. Make sure that your system is unplu
2. Remove the cover of your system and
(see your computer’s user manual fo
3. Slide the hub into the bay until it is fl
that the screw holes along the side of
and secure the hub into place using t
4. Connect the power cable to your com
5. Remove a plate from the rear of your
details, if necessary). Thread your US
connect the cable to an open USB por
6. Replace your computer cover and po
your USB devices to the hub.