and engineering support
Overview
Built for flexible digital presentations, the BG-PS21-4K is a KVM switcher that enables two devices to be connected to the same display at output resolutions of up to 4K@60Hz. Thanks to its USB-A ports, users can control two connected devices with one mouse and keyboard. These USB peripherals can be shared between the HDMI/Host connections and the USB-C connection. The device will also automatically switch inputs when a signal is detected via HDMI.
With the ability to de-embed audio and support for audio formats such as LPCM 7.1 audio, Dolby Digital® Plus, and DTS-HD® Master Audio™, you’ll be able to capture crystal clear audio from your presentations.
Connectivity & Control
With two HDMI ports for input, the BG-PS21-4K can easily connect two separate devices. There is one HDMI output to send the signal to a single display, enabling presenters to share content during meetings. This device supports HDMI 2.0 and HDCP 2.2. The resolution for HDMI inputs supports up to 4Kx2K@60Hz. There is also a USB-C port which offers 4Kx2K@30Hz resolution. Additionally, the USB-C port provides 40 watts of charging to keep devices online through the entirety of a presentation. Auto-switching between active inputs is also supported.
Using the two USB 3.0/2.0 type-A ports, peripherals like mice and keyboards can be connected to control active content. The unit itself can be controlled via front panel buttons of the RS-232 interface. A 4-pin DIP switch is also provided for EDID settings. A balanced audio output is also included for audio de-embedding.
This KVM switcher is a great option for small to medium sized conference rooms needing extra connectivity for multiple presenters during meetings. Our four-device KVM switcher, the BG-UHD-KVM41 may be a better fit if more than two devices need to be connected for presentation events.
Features
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High Resolution InputsInput Resolutions Up To 4K2K@60Hz -
![Plug-and-Play Setup]()
Plug and PlayEasy To Install And Use -
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Multichannel Audio SupportedLPCM 7.1, Dolby Atmos®, TrueHD, Digital® Plus, DTS: X™, And DTS-HD® Master Audio™ Pass-Through -
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EDIDEliminates Connection Issues -
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Auto-SwitchingAutomatically Selects Input When Change In Signal Is Detected -
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HDCP 2.2High-Bandwidth Digital Content Protection Creates A Secure Source To Display Connection
- 18G 2x1 switcher with HDMI and USB-C inputs
- Supports HDMI 2.0, 4Kx2K@60Hz 4:4:4, HDR 10, Dolby Vision, HDCP 2.2
- Smart EDID management for various applications and customized settings
- Supports automatic switching
- Provides charging on USB-C port up to 40W
- Balanced analog audio for audio de-embedding
- Controllable via front panel buttons and RS232
- Provides USB data (USB 3.0/2.0) and 4K video transmission on USB-C port
- Front panel buttons trigger both CEC and RS232 commands for display control
Videos
Tech Specifications
| Video | |
| Video Input | (1) HDMI, (1) USB-C |
| Video Input Connector | (1) Type-A female HDMI, (1) Type-C USB |
| HDMI Input Resolution | Up to 4Kx2K@60Hz 4:4:4 8bit |
| USB-C Input Resolution | Up to 4Kx2K@30Hz 4:4:4 |
| Video Output | (1) HDMI |
| Video Output Connector | (1) Type-A female HDMI |
| HDMI Output Resolution | Up to 4Kx2K@60Hz 4:4:4 8bit |
| HDMI Version | 2.0 |
| HDCP Version | 2.2 |
| USB Version | 3.0 |
| HDR 10 | Supported |
| CEC | Supported |
| HPD | Supported |
| Audio | |
| Audio Output | (1) AUDIO OUT (Stereo balanced L/R) |
| Audio Output Connector | (1) 5-pin terminal block |
| HDMI Audio Format | LPCM 7.1 audio, Dolby Atmos®, Dolby® TrueHD, Dolby Digital® Plus, DTS: X™, and DTS-HD® Master Audio™ pass-through |
| Stereo balanced L/R audio Format | PCM |
| Max Output Level | 2.0Vrms ± 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 Capability | 1KΩ 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 |
| General | |
| HDMI 2.0 Cable Length | 4K@60Hz 4:4:4 ≤ 5m, 4K@60Hz 4:2:0 ≤ 10m, 1080P ≤ 15m |
| Bandwidth | 18Gbps |
| Operation Temperature | 14°F ~ 131°F / -10°C ~ +55°C |
| Storage Temperature | -13°F ~158°F / -25°C ~ +70°C |
| Relative Humility | 10% ~ 90% |
| External Power Supply | Input: AC 100~240V, 50/60Hz, Output: 24V DC 2.71A |
| Power Consumption | 54W (Max) |
| Dimension (W*H*D) | 6.6" x 1.0" x 3.7" [168.0mm x 24.5mm x 95.0mm] |
| Net Weight | 0.54lbs [245g] |
Resources
PACKAGE CONTENTS
- 1x BG-PS21-4K 2x1 Presentation Switcher
- 2x Mounting Ears with 4 Screws
- 4x Plastic Cushions
- 1x 5-pin Terminal Block
- 1x RS232 Cable (3-pin terminal block to DB9)
- 1x Power Cord
- 1x Power Adapter (24V DC, 2.71A)
- 1x User Manual
Interfaces
- Power LED: This LED will illuminate red when the device is connected to the power supply.
- HDMI Input LED: This LED will illuminate green when the HDMI input is selected in AUTO mode, or will illuminate in orange when the HDMI input is selected in MANUAL mode.
- USB-C Input LED: This LED will illuminate green when the USB-C input is selected in AUTO mode, or will illuminate in orange when the USB-C input is selected in MANUAL mode.
- SELECT AUTO/3s Button: Press this button to select the next input source, or hold this button for at least 3 seconds to enable auto switching mode. Note that the factory default switching mode is AUTO.
- DISPLAY On Button: Press ON to turn on the display.
- DISPLAY Off Button: Press OFF to turn off the display.
- Audio Off Button: Press this button to mute/unmute the display audio.
- Volume Down Button: Press this button to decrease the audio volume gradually, or hold it to decrease the audio volume constantly.
- Volume Up Button: Press this button to increase the audio volume gradually, or hold it to increase the audio volume constantly.
- EDID: 4-pin DIP switch for EDID setting.
- FW: Micro-USB port for firmware upgrade.
- HDMI IN: HDMI port to connect HDMI input source.
- USB-C IN: USB Type-C input that provides 40 watts of charging for connected sources.
- HDMI OUT: HDMI port to connect to an HDMI output video display.
- AUDIO OUT: Connect to this 5-pin terminal block to output balanced audio to external audio devices.
- RS-232: Connect supported devices to this 3-pin terminal block for RS-232 control.
- HOST: Connect to this USB 3.0 Type-B port for host connection.
- DEVICES: These two type-A USB 3.0 ports are to connect peripheral devices such as a webcam or a speakerphone.
- DC 24V: Connect the 24V power supply adapter here to power the unit.
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