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Note: 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...
System Requirements A USB Host Controller installed on the computer An OS that supports the USB specification Win98 SE or higher for optional switch program and hotkey options - 3 -...
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Overview The US-221 / US-421 is a two (US-221) / four (US-421) port USB 2.0 Switch that allows up to two / four computers to share the use of a single USB peripheral device (such as a printer, scanner, modem, etc.) on a one-at-a-time basis.
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USB 2.0 compliant Fully backward compatible with USB 1.0 and USB 1.1 Bus powered - no external power supply necessary Up to two (US-221) or four (US-421) computers can share a single USB device Supports transfer rates of 1.5/12/480 Mbps Plug &...
Installation The US-221 / US-421 provides two / four Type B USB ports for computers to connect to, and one Type A USB port for the peripheral device (printer, scanner, modem, etc.) that the computers will share. To install the USB 2.0 Switch: 1.
(located on the top of the unit) until you hear the beep or see the next port’s LED light illuminate. US-421 To switch the peripheral focus to another port, press the button which corresponds to the port you want to give focus to.
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Press [Num Lock] twice to bring the peripheral focus to your computer. Press [Scroll Lock] twice to move peripheral focus from the current port to the next port (US-421 only). You must enable the Next Port Hotkey to use this function (see p. 12). - 8 -...
Program Installation To install the USB 2.0 Switch program: 1. Insert the installation disc included with your switch into the CD-ROM drive. Double-click the USB 2.0 Switch icon and fol- low the installation wizard. 2. When the installation completes, an icon labeled USB 2.0 Switch appears on your desktop and another icon appears in the system tray.
Program Operation Basic Mode To use the program to switch the device focus: 1. Right-click the USB 2.0 Switch icon (located in the system tray). The Standard Mode pop-up menu appears: 2. Select Switch to take control of the peripheral device. Note: Performing this action will take away control of the peripheral device from any person who currently is using it.
Advanced Mode To turn on Advanced Mode: 1. Right-click the USB 2.0 Switch icon (located in the system tray) and select Advanced Mode. 2. Right-click the USB 2.0 Switch icon again and select the specific computer you want to give the peripheral focus to. - 11 -...
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To enable (disable) the Next Port Hotkey (US-421 only): Note: The USB 2.0 Switch program must be in Advanced Mode (see p. 11) before you can perform this operation. 1. Right-click the USB 2.0 Switch icon (located in the system tray) and select Enable (Disable) Next Port Hotkey.
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Options. The following dialog box appears: Enable Software Sound On/Off: Checking this box enables you to turn the US-221 / US-421 beeper on or off. After clicking OK, an option appears at the top of the Advanced...
Action Unit operates Static electricity may Unplug the appropriate USB cable from erratically cause the unit to the US-221 / US-421 port, then operate erratically. re-insert it. The program The program does Press the button(s) on the switch to does not...
Specifications Function US-221 US-421 Console Connection Computer Selection Hotkey, Buttons, Program (Windows) Connectors Computer 2 x USB Type B 4 x USB Type B Console 1 x USB Type A 1 x USB Type A LEDs Device 1 (orange) Port Select...
Limited Warranty IN NO EVENT SHALL THE DIRECT VENDOR'S LIABILITY EXCEED THE PRICE PAID FOR THE PRODUCT FROM DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES RESULTING FROM THE USE OF THE PRODUCT, DISK, OR ITS DOCUMENTATION. The direct vendor makes no warranty or representation, expressed, implied, or statutory with respect to the contents or use of this documentation, and especially disclaims its quality, performance, merchantability, or fitness for any particular purpose.