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ATLONA 2 x 1 Signal Sensing Automatic VGA + Stereo Audio Switcher AT-APC21A

  • Maximum VGA Resolution: 2048x1536 2 x HDB-15 (female) input
  • 1 x HDB-15 (female) output
  • 1 x 3.5 mm audio jack input
  • 1 x 3.5 mm audio jack output
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Learn more about the Atlona AT-APC21A




Resolution Support
Maximum VGA Resolution: 2048x1536
Video Bit Rate/Bandwidth


2 x HDB-15 (female) input
1 x HDB-15 (female) output
Analog Aduio
1 x 3.5 mm audio jack input
1 x 3.5 mm audio jack output


LED Indicator
Blue for Channel 1; Green for Channel 2


Power Supply
Taken from VGA signal or DC 5V power adapter (sold separately)


Switch between two VGA w/Audio sources to a single monitor and set of speakers

No software required

Supports VGA, XGA, SVGA, SXGA, UXGA, WUXGA, Multi-Sync and TFT-LCD monitors.

Supports stereo audio

Auto detect monitor type and DDC2B signal for each port

Supports 350 MHz bandwidth with maximum VGA resolution of 2048x1536.

Video enhancement to extend quality video up to 30 meters

Auto switch to new connected VGA channel (Auto Detect & Select)

Optional external control button for manual selection

Dual color LED to indicate active channel status

Power-free, electronic design to protect connected devices

Magnetic pad for ease of installation


4.44" x 2.44" x 1.14"


Package Content
Atlona AT-APC21A 2x1 Signal Sensing Automatic VGA Switcher w/Analog Audio
Wired manual selector
User Manual

Quick Info


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year

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