BG-PS21-4K 2×1 18G 60Hz 4:4:4 Presentation/2-Port KVM Switcher w/ HDMI and USB-C inputs


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If for any reasons you are dissatisfied with your purchase, you can return it back to BZB Gear within 60 days of purchase date for a full refund.

MSRP $599.00

SKU: BG-PS21-4K Categories: ,

Warranty: 2 years

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The BG-PS21-4K is designed to switch between one HDMI input and a single USB-C input to one HDMI display output.  Capable of supporting video resolutions up to 4Kx2K@60Hz (4:4:4) 8-Bit, 1080P, and 3D this unit delivers a high quality picture. In addition, there is smart built-in EDID setting that can be selected by the 4-pin DIP switch on the front panel.

The KVM switcher supports stereo and multi-channel audio on the HDMI inputs. In addition to the audio insertion or embedding for the HDMI output signal, the audio is simultaneously de-embedded to a balanced analog audio output. Device extensions are provided utilizing one type-B USB port for host connection, and two type-A USB ports for HID devices such as camera, microphone, keyboard etc.

This unit features multiple methods of control. When in the AUTO mode, the switcher will automatically switch to the first detected source device. When the active source is disconnected, the unit will switch to the lowest numbered input. The unit can be manually controlled by the front panel buttons and RS-232 command. CEC allows the display device to be controlled by the front panel buttons offering RS-232 and CEC commands.



  • 18G 2x1 switcher with HDMI and USB-C inputs.
  • Supports automatic switching.
  • Controllable via front panel buttons and RS232.
  • Supports HDMI 2.0, 4Kx2K@60Hz 4:4:4, HDR 10, Dolby Vision, HDCP 2.2.
  • Provides charging on USB-C port up to 40W.
  • Provides USB data (USB 3.0/2.0) and 4K video transmission on USB-C port.
  • Balanced analog audio for audio de-embedding.
  • Peripheral units (g. microphone and camera) can be connected by type-A USB (USB 3.0/2.0) ports and automatically switched along with HDMI and USB-C input as USB DEVICES for corresponding HOST.
  • Smart EDID management capable for various applications and customized setting.
  • Front panel buttons trigger both CEC and RS232 commands for display control. (ON, OFF, MUTE, VOL+, VOL -).

Additional information

Weight3 lbs
Dimensions20 × 15 × 5 in


Video Input(1) HDMI, (1) USB-C
Video Input Connector(1) Type-A female HDMI, (1) Type-C USB
HDMI Input ResolutionUp to 4Kx2K@60Hz 4:4:4 8bit
USB-C Input ResolutionUp to 4Kx2K@30Hz 4:4:4
Video Output(1) HDMI
Video Output Connector(1) Type-A female HDMI
HDMI Output ResolutionUp to 4Kx2K@60Hz 4:4:4 8bit
HDMI Version2.0
HDCP Version2.2
USB Version3.0
HDR 10Supported
Audio Output(1) AUDIO OUT (Stereo balanced L/R)
Audio Output Connector(1) 5-pin terminal block
HDMI Audio FormatLPCM 7.1 audio, Dolby Atmos®, Dolby® TrueHD, Dolby Digital® Plus, DTS: X™, and DTS-HD® Master Audio™ pass-through
Stereo balanced L/R audio FormatPCM
Max Output Level2.0Vrms ± 0.5dB. 2V = 16dB headroom above -10dBV (316mV) nominal consumer line level signal
THD+N<0.05% (-80dB), 20Hz ~ 20KHz bandwidth, 1KHz sine at 0dBFS level (or max level)
SNR>80dB, 20Hz ~ 20KHz bandwidth
Crosstalk Isolation>70dB, 10KHz sine at 0dBFS level (or max level before clipping)
L-R Level Deviation< 0.3dB, 1KHz sine at 0dBFS level (or max level before clipping)
Frequency Response Deviation<±0.5dB 20Hz ~ 20KHz
Output Load Capability1KΩ and higher (supports 10x paralleled 10KΩ loads)
Stereo Channel Separation>70dB@1KHz
Control Part
Control(1) EDID, (1) FW, (1) RS232, (1) HOST, (2) DEVICE
Control Connector(1) 4-pin DIP switch, (1) Micro-USB, (1) 3-pin terminal block, (1) Type-B USB 3.0, (2) Type-A USB 3.0
HDMI 2.0 Cable Length4K@60Hz 4:4:4 ≤ 5m,

4K@60Hz 4:2:0 ≤ 10m,

1080P ≤ 15m

Operation Temperature-10℃ ~ +55℃
Storage Temperature-25℃ ~ +70℃
Relative Humility10% ~ 90%
External Power SupplyInput: AC 100~240V, 50/60Hz, Output: 24V DC 2.71A
Power Consumption54W (Max)
Dimension (W*H*D)168.0mm x 24.5mm x 95.0mm
Net Weight245g



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Package Contents

① 1x BG-PS21-4K 18G 2x1 Presentation Switcher

② 2x Mounting Ears with 4 Screws

③ 4x Plastic Cushions

④ 1x 5-pin Terminal Block

⑤ 1x RS232 Cable (3-pin terminal block to DB9)

⑥ 1x Power Cord

⑦ 1x Power Adapter (24V DC, 2.71A)

⑧ 1x User Manual


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