USB 2.
FCC Information This equipment has been tested and found to comply with the limits for a Class B 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 instruction manual, may cause interference to radio communications.
US221A / US421A User Manual Online Registration You can register your product at our online support center: International http://support.aten.com North America http://www.aten-usa.com/product_registration Online Support International Email Support Online Support support@aten.com Technical Support http://support.aten.com Troubleshooting Documentation Software Updates http://www.aten.com Telephone Support 886-2-8692-6959 North America Email Support Online Support ATEN TECH support@aten-usa.
Package Contents The US221A / US421A USB 2.0 Peripheral Switch package contains the following items: 1 2-port (US221A) or 4-port (US421A) USB 2.0 Peripheral Switch 1 1.8 m USB Type A to USB Type B Cable 1 Installation Disk 1 User Manual* 1 Quick Start Guide Check to make sure that all the components are present and that nothing got damaged in shipping. If you encounter a problem, contact your dealer.
Overview The US221A / US421A is a 2/4-port USB 2.0 Peripheral Switch that allows up to 2/4 computers to share the use of a single USB peripheral device (such as a printer, scanner, mass storage drive, etc.*) on a one-at-a-time basis. The peripheral focus can be given to a computer manually by using pushbuttons on the switch or by using the software-based configuration utility.
Features Enables two (US221A) or four (US421A) computers to share a single USB peripheral device Simple port selection via pushbuttons or easy-to-use configuration utility Auto Switch function – no need for a separate print server USB 2.
System Requirements Computers The following equipment must be installed on each computer that is to be connected to the system: USB host controller Cables USB to USB cables to connect the computers to the peripheral device. Note: Only one USB Type A to USB Type B cable is provided in the US221A / US421A package. You will need to purchase an additional USB Type A to USB Type B cables for each computer you wish to connect to the US221A / US421A.
Components Top View 4 1 2 3 1 4 3 2 -8-
Rear View 5 6 5 6 No. Component Description 1 Lock LED Lights orange to show that the US221A / US421A is locked. 2 Port Selection Pushbutton(s) Pressing a Port Selection Pushbutton brings control to the computer attached to its corresponding port. See Manual Operation – Pushbutton, page 12 for further details. 3 Port Selected LEDs Lights green to show that the computer attached to its corresponding port has control.
Installation 1. Make sure that the power to any device that you connect to the installation has been turned off and that all devices are properly grounded. The US221A / US421A USB 2.0 Peripheral Switch provides 2/4 USB Type B ports for computers to connect to, and one USB Type A port for the peripheral device (multifunction printer, scanner, mass storage device, etc.) that the computers will share. To install the US221A / US421A, do the following: 1.
1 2 3 - 11 -
Manual Operation – Pushbutton Note: Manual operation and the software-based configuration utility operate independently; commands from one will not override the other. US221A To toggle the USB peripheral focus between the two computers, press the port selection pushbutton (located on the top of the unit). The selected port LED flashes and the unit beeps. When the flashing stops and the LED becomes steady (in about four seconds), that port has the peripheral focus.
Software Operation Installing the Configuration Utility The US221A / US421A has a software-based configuration utility that can be used to configure the US221A / US421A's settings, such as the Auto Switch function, Manual Switch and Release reminder, and sound effects. The utility can also be used to lock and unlock control of the US221A / US421A. Note: Microsoft Windows users should login as an administrator to install and launch the US221A / US421A software.
Basic Operation When you click on the icon in your system tray, a menu bar of shortcuts appears. The first item at the top of the menu is one of four shortcuts, depending on the current status of the US221A / US421A. Shortcut options are Lock Connection, Unlock Connection, Switch to Local Computer, and Cancel Switch Request. Lock / Unlock Connection To lock the connection from your computer to the USB peripheral, click on the icon in the system tray and select Lock Connection.
Advanced Operation and Settings To use the Configuration Utility to view and change the US221A / US421A’s settings, click on the icon in your system tray and select Settings. The following dialog box appears: Auto Switch and Release Enable these buttons to activate the US221A / US421A’s Auto Switch function for a printer or other devices. When Auto Switch and Release is enabled, commands sent to the USB peripheral device are stored to be processed on a firstcome, first-served basis.
Printers If your USB device is a printer or MFP (multifunction printer) and you wish to use its print function, enable the Print Function Only button and select the printer from the drop-down menu. Note: 1. If the USB peripheral device is a printer, you do not need a separate print server. 2. If you cannot find your printer in the drop-down menu, the printer may need to be reinstalled. See Troubleshooting, page 19 for further details. 3.
Multifunction Printers If your USB 2.0 peripheral device is a multifunction printer and you wish to use its scan function, there are three ways to do this: If the multifunction printer’s scan function have dedicated applications, enable both the Print Function Only and the Other Devices/Applications buttons and click Add. In the dialog box that appears, click Browse to search for the application program. (In Microsoft Windows only, you can also key in the device name for easy reference).
Manual Switch and Release If the US221A / US421A is operating under manual control (with a USB 2.0 peripheral such as a storage device, for example), enable this button to set the time for a reminder to release control of the US221A / US421A. The reminder will appear as a dialog box on screen of the PC currently in control of the US221A / US421A. General Enable this button to turn the US221A / US421A’s configuration utility beeper on. Note: 1. This enables the software beeper.
Troubleshooting First, make sure that all cables are securely attached and seated completely in their sockets. Problem Possible Cause Action Unit operates erratically Static electricity may cause the unit to operate erratically. Disconnect the appropriate USB cable from the US221A / US421A port, then reconnect it. Printer does not appear in configuration utility. Printer was not installed correctly. Re-install the printer; the configuration utility will now find the printer.
Specifications Function Computer Connections Computer Selection US221A US421A 2 4 Pushbuttons, Software, Auto Switch Connectors Computer LEDs Device 2 x USB Type B Device 1 x USB Type A 1 (Orange) Selected Switches 2 (Green) 4 (Green) 2 x Pushbutton 4 x Pushbutton Power Supply USB Bus Powered Power Consumption Environment DC5V, 2.5W Humidity 0–80% RH, Non-condensing Storage Temp. -20–60ºC Operating Temp.
