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USB Device Compatibility
Overview
The Keyspan USB Server hardware (model US-4A) supports USB devices, USB multi-function
printers, scanners, hard drives, HID devices, and other USB devices.
The USB Server supports up to 8 USB devices on one USB Server. While the USB Server only
has 4 USB ports, we support 8 devices due to how Compound USB devices work. Compound
USB devices are devices that have multiple components connected to an embedded USB hub inside
1 USB device. For example, the Lexmark X1150 is a compound device that has 2 components
(one for the scanner, one for the printer). The Canon i475D is also a compound device that has 3
components (the printer, the card reader, and a HID device [for buttons on the printer]).
Tech Note About USB Devices:
Technically speaking, USB devices can either be a single USB device (a USB printer
that contains only one component ie a single button mouse), a composite USB
device (a device that contains multiple components but appears as one device ie a
multifunction printer), or a compound USB device (a device that has multiple
components that are tied together by an embedded USB hub inside the USB device
itself ie a printer with a card reader, a keyboard with a port to connect a mouse, etc.).
Using single and composite USB devices via the USB Server is identical to using them
when connecting to built-in port. By default, compound USB devices also work the
same way as when they are connected to a built-in port however you can OPTIONALLY
configure the USB Server to allow you to connect to certain components of a
compound device instead of connecting every component. This is useful if you just
want to connect the printer component of a multi-function so that you don't get any
message screens regarding the scan component of that device.
Tested USB Devices List
For a list of USB devices that have been tested with the Keyspan Server Utility software version
1.3.1, please refer to the Keyspan USB Server Tested USB Device List'. This document is a
separate document and can be found on Keyspan's web site.
The Keyspan USB Server Tested USB Device List is intended to be used as reference guide and
not as a compatibility list. The USB Server platform is intended to work with a wide variety of USB
devices with the exception of Isochronous USB devices.
If you have a USB device that doesn't work with the Keyspan USB Server, please contact us as we
may already have a software/firmware update that will fix the incompatibly.
This User Manual applies to the Keyspan USB Server Software Version 1.3.x. Patent Pending.
Rev 2005jun23
Keyspan:USB Server - User Manual
Page 60
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