| 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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- 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 |