Aten CS231 is a powerful, micro-processor controlled computer sharing device. It is a multi-user, single-tasking device that enables two users to share the use of a single computer - each from their own consoles (monitor, keyboard, and mouse).The CS231 supports USB consoles and both PS/2 and USB computers.

Aten US221A is a 2-port USB 2.0 Peripheral Switch that allows up to 2 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, using the software-based configuration utility, or by the Auto Switch function.

Aten US421A is a 4-port USB 2.0 Peripheral Switch that allows up to 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, using the software-based configuration utility, or by the Auto Switch function.

IOGEAR USB 2.0 Printer Auto Sharing Switch enables two PCs and/ or Macs to easily share* one USB printer, multi-function printer, or USB device. No more plugging and unplugging between your computers. Simply send the print job and the switch automatically makes the swap for you. Automatic switch function is software based and only available with USB printer or the printer function of a multi-function printer.

IOGEAR USB Net ShareStation let multiple users share up to 4 USB devices through your office network by connecting to a USB 2.0 Hub . When connecting the USB Net ShareStation to a wireless router, users can access their multimedia content and USB devices wirelessly.

 
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ATEN UC2322 USB-to-Serial RS-232 Hub provides an easy way to add 2 external plug-and-play RS-232 serial connection for computers, notebooks, and handheld computing devices that support only USB interface. It provides a quick, simple, and cost-effective solution and is ideal for various communication and automation applications. Also available in 4 port version - UC2324.

Lava Ether-Serial Single Port RS-232 DB-9 leverage the power of Ethernet for legacy serial devices. It is ideal for POS systems, security systems, industrial automation, building automation, or any application using RS-232 devices, the Lava Ether-Serial Link provides a serial port that is network-enabled and simple to install, configure, and control.  The serial port of the Lava Ether-Serial RS-232 1-DB9 looks and acts precisely like it is built into your computer: it appears right alongside other serial ports in Windows' Device Manager. Ether-Serial Link is available in DB9 or RJ45 connector, 1, 2, and 4 ports version.  

SIIG Serial Device Server - Ultima let you easily and quickly setup and remotely control serial device via TCP/IP.

Belkin 4x4 USB Peripheral SwitcH F1U400  lets you access four USB devices-such as printers, cameras, scanners, and external hard drives-from up to four computers simultaneously. It keeps all your devices available without your having to detach and reconnect them from one computer to another, and gives you the option of using them all from a single computer or assigning each device to any of the connected computers.