UR-12+ – 2-port USB VGA KVM switch w/ DDM & multi-hotkey


2-port USB VGA KVM switch w/ DDM & multi-hotkey


Master-IT USB+ uses breakthrough technologies which allow for flexibility and functionality never before seen in a KVM switch. The built-in USB DDM prevents interruptions in communication between shared devices and connected systems /computers. By DDM technology, switching ports without any lag time occurred can raise the efficiency and compatibility of KVM switch. UR-12-PLUS+ embedded DDM Technology can 100% maintain the compatibility of the shared devices and connected systems. UR-12-PLUS + becomes the most reliable and robust KVM switch in the world. Currently DDM Technology can be implemented for USB HID class devices only, but in the future will be expanded to cover all major types of USB devices.

Features and Benefits

  • Supports excellent video quality at resolutions of up to 1920×1200 /400Mhz
  • Features stable video using all-time active DDC/EDID communication
  • Compatible with all versions of Windows, Linux, and OS X
  • Reliable connectivity with USB-HID devices using Dynamic Device Mapping

This new enhanced 2 and 4-port USB KVM switch is built with ConnectPRO patented DDM technology. With the advanced Dual-Core technology this KVM can easily be considered the most reliable and stable solution on the market when it comes to switching 100% USB HID devices between multiple computers.

What’s Included

If you are looking for a UR-12+ with KVM cables, check out the UR-12+KIT.

UPC Code: 641458178158

Technical Specifications



Computer port number


On-Screen Display


Panel button control


Front panel Indication

PC On-line – Green Selected – Red Both – Orange

IR remote control
RC-01 (Sold Separately)

Hot plug-and-play


Hot key control


Auto Scan

Yes ( Hot key )

Selectable scan interval

5, 8, 15, 20, 30 sec ( Hot key )

Beep Sound

On / Off ( Hot key selectable )

Keyboard Type Rate

10, 15, 20, 30 characters/sec ( Hot key )

Cable length ( Max )

5M ( 15 ft ) at PC, or 100 ft for VGA only

VGA Resolution

Max 1920 x 1440 @ 60Hz, 400MHz DDC1 / 2B

System connectors

Keyboard & Mouse

USB B x 4


HDB-15 Male x 2

Console connectors

Keyboard & Mouse

USB A ( DDM Technology ) x 2


HDB-15 Female x 1

Hub Link Port

USB A ( USB 2.0 ) x 2



44 mm


165 mm


76 mm


530 g


Operating Temp

0 to 60 degrees C

Storage Temp

-30 to 70 degrees C


0~80% RH, NC


Operating Voltage

DC 5V ( 2000 mA )

Power Frequency

50-60 Hz



Additional information

Weight 4 lbs
Dimensions 16 × 10 × 6 in
Display Connection

Peripheral Connection



Cables Included

Power Adapter Included






Frequently Asked Questions


    • What is the hot-key combination for switching ports?

      • On our USB KVM switches with DDM, the hot-key by default is set to Ctrl. This can be changed to other available options with the Hot-Key Select button on the front of the switch. The command sequence for all of them is [hotkey] [hotkey] [#]. All three are tapped consecutively (not simultaneously), with [hotkey] being for example, the Ctrl key and [#] being the number of the port you are switching to.


    • Can I cascade multiple KVM Switches?

      • The USB KVM switches cannot be cascaded.


    • How can I connect my USB KVM switch to a computer that has PS/2 keyboard and mouse ports?

      • As long as the computer has available USB ports, you can use those instead of the PS/2 ports.


    • What if I want to use a wireless keyboard/mouse combo with the KVM switch?

      • That should not be a problem. Make sure that the keyboard and mouse function on all computers when directly connected, then try connecting through the KVM switch.


  • What can I do if I’ve hooked everything up, and although the video works, I get no keyboard and mouse functionality on any of the connected computers?

    • Here are some steps to go through if your KVM switch has lost keyboard and mouse functionality.
    • Disconnect the power and all cables and connections from the switch. There should be no lights illuminated on the KVM. Let it sit for about 1 minutes.
      1. Reconnect the Power adapter to the KVM, followed by the Keyboard, Mouse, and monitor.
      2. After those console connections are attached, connect one of your computers back to Port 1 of the KVM.
      3. Make sure the keyboard and mouse are working on that computer, then connect the second computer.
      4. At this point, the KVM has been completely reset, and it should be back in operable condition.