Introduction
The ExpressBus
™
is a full-featured Universal Serial Bus
(USB) hub. ExpressBus
™
provides one upstream port and four
downstream ports to the user. It supports both full speed
(12Mbps) and low speed (1.5Mbps) devices such as
keyboards, mice, joysticks and speakers. The ExpressBus
™
allows users to attach and use computer peripherals to their
computers, without the need to reboot or run setup. Unlike
many other hubs, the ExpressBus
™
is both bus and self-
powered. The self-powered feature allows for the cascading
of devices with additional hubs allowing up to 127 different
devices to be connected to a single USB port. The
ExpressBus
™
also includes per-port power ready LEDs for the
user. For detailed specifications please refer to the section
entitled "SPECIFICATIONS". Also included is a 6’ (1.8m)
USB Device Cable for immediate connection.
Features
• Supports both OHCI (Open Host Controller Interface)
and UHCI (Universal Host Controller Interface).
• Provides four downstream ports.
• Both self-powered and bus-powered mode are
automatically detected.
• Per-port overcurrent detection and protection.
• Per-port power LED indicators.
• Hot insertion capabilities.
• Universal Serial Bus (USB) Compliant.
USB Cable
There are two types of USB connectors; one is the USB-A the
other USB-B. The included USB Device Cable is 6’ (1.8m) in
length.
Power Mode Setting
The ExpressBus
™
can operate either with or without the
included AC adapter. When used in bus-powered mode,
without the AC adapter, the hub will supply each device
attached to it a maximum of DC +5V, 100mA power. This
should be sufficient for most mice, joysticks and other
low-power devices. In self-powered mode, using the AC
adapter, the ExpressBus
™
provides a maximum DC +5V,
500mA to each downstream port, allowing for connection to
other hubs or power-hungry devices.
Installation
1. Attach the AC adapter to the power jack on the hub and
power source. While the AC adapter is optional in most
situations, it is recommended that it be used when
installing the USB hub. Once it is determined that the
devices are working properly unplug the AC adapter. If
the devices continue to work properly you will not need
the AC adapter. If they cease to function you will need
the AC adapter.
2. Connect the USB-A connector (please refer to Figure-2) of
the USB cable into the downstream port of the PC or one
downstream port of another hub.
3. Connect the USB-B connector (please refer to Figure-3) of
the USB cable into the upstream port of the ExpressBus
™
USB hub.
4. Connect the USB-A connector of the USB device, such
as a mouse, keyboard, etc. into any of the downstream
ports of the ExpressBus
™
.
Software
1. No software is needed for Windows
®
98; however for some
versions of Windows
®
95 release 2 you will need to use the
software provided by the manufacturer of the device you
want to connect.
Specifications
Upstream Ports
(1)
Downstream Ports
(4)
LED
(1) Powered
(4) Downstream Power
Per-Port Voltage
DC +5V
Per-Port Current
500mA(max)
Power Mode
Self-powered or
(Autodetect)
Bus-powered
Operation Temperature
5C~40C
Stock Temperature
-20C~60C
Humidity
0%~80%RH noncondensing
Enclosure
Plastic
Weight
158g
Dimension (LxWxH)
130x100x36.5(mm)
Power Supply
DC 7.5V 2.1A
Figure-2
USB-A connector
Figure-3
USB-B connector
PORT 1
PORT 2
PORT 3
PORT 4
ROOT PORT
Per-port power LED
Powered LED
DC7.5V 2.1A
Power Jack
ROOT
PORT
Figure-1
