Product Type | 4-Port HDMI Automatic Video Switch |
Form Factor | Desktop |
Material | Steel |
Color | Black |
Power Requirements | 100 - 240V AC, 50/60Hz |
Power Adapter Type | External |
Input Voltage | 100 - 240V AC |
Output Voltage | 5V DC |
Power Consumption | 5W |
Switch Type | Automatic or Manual |
Video Resolution Support | Up to 3840 x 2160 @ 30Hz (4K) |
HDCP Support | Yes (HDCP 1.4) |
StarTech 4-Port HDMI Automatic Video Switch - 4K (VS421HD4KA)





Key Benefits

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AI-Powered Summaries from Online Customer Reviews
Eye-Insights™ are generated by proprietary AI that analyzes real online customer reviews to highlight top pros and key product features. While we aim for accuracy, insights are provided “as-is” and individual results may vary.
- Enables efficient switching between four HDMI sources with minimal disruption, ideal for collaborative or AV-intensive environments
- Supports 4K resolution and serial control, meeting high-performance requirements for commercial displays and presentations
- TAA compliance and durable steel build make it suitable for government and institutional AV applications
Product Overview
Switch between four HDMI sources on a single HDMI display w/ 4K video resolution fast switching for minimal disruption - 4-port HDMI automatic video switch - 4K 4x1 HDMI switch - 4K UltraHD HDMI switch - RS-232 serial control interfaceSpecifications
Product Overview
Physical & Environmental
Width | 2.6 in (66 mm) |
Depth | 6.1 in (155 mm) |
Height | 0.8 in (20 mm) |
Weight | 0.6 lb (0.27 kg) |
Operating Temperature | 0°C to 40°C (32°F to 104°F) |
Storage Temperature | -10°C to 60°C (14°F to 140°F) |
Humidity | 10% to 85% RH (non-condensing) |
Enclosure Type | Metal |
Cloud Management & Licensing
Remote Management | No |
RS-232 Control Support | Yes (via DB9 to RJ11 adapter) |
IR Remote Included | Yes |
Interfaces
HDMI Input Ports | 4 x HDMI (19-pin) |
HDMI Output Ports | 1 x HDMI (19-pin) |
Serial Control Interface | 1 x RJ-11 (RS-232) |
Video Bandwidth | 10.2 Gbps |
Connector Plating | Gold |
Compliance & Origin
Country of Origin | Taiwan |
TAA Compliant | Yes |
RoHS Compliant | Yes |
Certifications | CE, FCC |
Warranty | 2 Years |
Advanced Security Features
HDCP Version | 1.4 |