Product Name: Aten 8-Port MasterView Pro KVM Switch W/OSD,. DB25 Connectors (CS128A). 
The MasterView Pro KVM Switch is a control
      unit that allows access to multiple PCs from a single console (keyboard,
      mouse, and monitor). Before the development of the MasterView, the only
      way to control multiple computer configurations from a single console was
      through a complex and costly network system. Now, with the MasterView Pro,
      you can easily access multiple computers in a cost effective manner.
      
      This MasterView Pro unit can control up to 8 PCs. Cascading the unit will
      allow up to 302 PCs to be controlled by a single keyboard, monitor and
      mouse.
      
      Setup is fast and easy; plugging cables into their appropriate ports is
      all that is entailed. There is no software to configure, so there is no
      need to get involved in complex software installation routines or be
      concerned with incompatibility problems. Since the MasterView Pro
      intercepts keyboard input directly, it works on any hardware platform and
      with all operating systems.
      
      The MasterView Pro provides three convenient methods to access any PC
      connected to the system: using the port selection switches located on the
      Masteriew Pro’s front panel; and entering Hot Key combinations from the
      keyboard.
      
      A powerful Quick View Scan Mode feature allows you to auto scan and
      monitor the activities of all operating PCs on the installation one by
      one.
      
      There is no better way to save time and money than with a MasterView Pro
      installation. By allowing a single console to manage all the attached PCs,
      the MasterView Pro eliminates the expense of purchasing a separate
      keyboard, monitor, and mouse for each PC as well as saving all the space
      they would take up. It also eliminates the inconvenience and wasted effort
      involved in constantly moving around from one PC to another.
      
  - Supports Microsoft Intellimouse, Logitech
      FirstMouse+, MouseMan+ and other wheel mice.
  
 
  - Mouse Conversion: PS/2 Mice control all
      connected PCs - Even those with serial connections.
  
 
  - PS/2 style keyboards control all PCs.
  
 
  - Hot Pluggable - Add PCs or Remove Connected
      PCs for maintenance without powering down the CPU switch.
  
 
  - Superior Video Quality - Up to 1920 x 1440.
  
 
  - No Software Required - Easy PC Selection
      via Front Panel Pushbuttons or Hot Keys .
  
 
  - Auto Scan mode for Monitoring PCs.
  
 
  - LED Display for easy status monitoring.
  
 
  - Control up to 302 CPUs with chained
      CS-128s.
  
 
  - Keyboard Caps Lock, Num Lock and Scroll
      Lock states are automatically saved and restored when switching between
      computers.
  
 
  - Custom Cables for Superior Signal Quality.
  
 
  - Rack Mountable