AdderView GEM. 4 Port Desktop PS/2 style KVM Switch

AdderView GEM. 4 Port Desktop PS/2 style KVM Switch

Product code: GEM4

£249.00 exc. VAT
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Product information:


The ADDERView GEM is the ultimate in desktop KVM convenience and allows up to four computers to be controlled from a single keyboard, monitor and mouse.
The GEM is extremely compact and takes up very little space on your busy desktop or in a crowded server room. Available in either two or four channel models GEM is designed for ease of use and maximum compatibility with new and existing computer systems.
Often low-cost is associated with low-specification, but not in the case of the GEM. Like all ADDER switches GEM features SmartBoot, which intelligently allows all connected portable or desktop computers to boot as if they had their own dedicated keyboards and mice attached. It also supports PC/AT and PS/2 systems and provides high video bandwidth with low distortion at screen resolutions up to 1900 x 1440. This makes the GEM the ideal choice for use with larger monitors in CAD or DTP environments.
The latest monitors equipped with DDC interfaces are also supported and this facilitates true "Plug-and-Play" compatibility.
The GEM offers the user many choices for channel selection.
Keyboard hot-key, mouse switching, front panel operation, RS232 and optional RC1 remote control switching are all provided as standard and access to connected computers can also be restricted using the GEMs security password protection feature.
CPU video/monitor ports A monitor can be plugged straight into the monitor port. Supports VGA/SVGA/XGA/XGA-2/SXGA/UXGA video.
VESA DDC1 and DDC2 signalling supported. Screen resolution of up to 1900 x 1440. Screensaver feature support.


  • Keyboard ports
    Supports AT and PS/2 keyboards automatically. PS/2 keyboards plug in directly and keyboards with AT style 5 pin DIN plugs require an adaptor. Automatic mode emulation ensures that the keyboard is correctly programmed to the state expected by the CPU whenever the channel is changed.Type 1, 2 and 3 keyboards are supported
  • Mouse ports
    PS/2 type Logitech or Microsoft compatible mouse is required to control the switch. Use of a 3 button mouse also allows channel switching. Many Internet wheel/scroll mice including Scrollpoint and Explorer are also supported. Prompt and stream modes supported for maximum portable and desktop mouse compatibility. All mouse connections from the GEM to PCs support both serial RS232 and PS/2 mice in any combination.
  • Maximum distance
    2m if interface-powered or 10m if PSU used when attached keyboard, monitor and mouse. 5m if interface-powered or 30m if PSU used when attached to CPU or cascaded GEM.
  • Front panel key and display
    Used for selecting channels and entering configuration mode. Display shows selected CPU, data activity from keyboard or mouse and switch status.
  • Autoscan
    Adjustable to display only active ports or all ports in sequence. Multiple video head operation Multiple GEMS may be linked together via the options ports to provide synchronised switching for multiple videohead applications.
  • Password
    User-selectable to prevent unauthorised access to connected CPUs.The password is safely stored in the unit's EEPROM memory.
  • Physical
    Metal case 230 x 50 x 170 mm with plastic front display panel.
  • Power
    Interface powered operation. Optional 5Vdc, 500mA PSU available.
Technical Specification: 4, PS/2, VGA, Desktop

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