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StarTech.com VS421HD4KA 4-Port HDMI Automatic Video Switch - 4K 2 x 1 with Fast Switching - Auto-Sensing - Serial Control & Remote
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Product Features
Technical Overview
This HDMI switch handles 4K video at 60Hz with full support for HDMI 2.0 specifications, ensuring compatibility with current-generation media players, gaming consoles, computers, and set-top boxes. The four HDMI inputs accept signals from displays, projectors, computers, set-top boxes, gaming consoles, AV receivers, DVD players, and Blu-ray disc players. A single HDMI output delivers the selected source to the target display with minimal signal degradation.
Audio configuration is versatile, supporting both 5.1 and 7.1 surround sound formats for immersive entertainment or professional audio applications. The switch employs cable-based connectivity technology, requiring standard HDMI cables for signal transmission. Its compact form factor measures 2.60 inches wide by 6.10 inches deep by 0.80 inches high, making it easy to integrate into rack mounts, media cabinets, or behind-display installations.
Relevant factors for this section include Connectivity Technology, Number of Input Devices Supported, Device Supported, Graphics Modes. When those points are considered together, they give buyers a clearer picture of how the product is equipped, how it fits into deployment, and what kind of day-to-day role it is meant to support.
Key Product Advantages
The VS421HD4KA simplifies multi-source AV management with intelligent features that enhance both usability and performance. Automatic sensing detects active inputs and switches accordingly, while priority switching allows predefined source hierarchy. Manual control via included IR remote or RS-232 serial interface provides precise command for integrated systems.
Flexible Control Options
Operate the switch through automatic detection, priority-based selection, IR remote commands, or RS-232 serial protocols. This versatility supports everything from simple plug-and-play setups to advanced control systems with automation software.
- IR remote included
- RJ11 to DB-9 serial adapter provided
- Mounting kit for secure installation
Enhanced Compatibility
Backward compatibility with 1080p ensures seamless integration with existing HD equipment. EDID copy maintains consistent display settings across all connected sources, preventing resolution mismatches and ensuring optimal picture quality.
- Supports 4K and 1080p
- Works with various HDMI devices
- Universal power adapter included
Deployment / Use Cases
This HDMI switch excels in environments where multiple video sources need centralized management. In corporate conference rooms, it can toggle between presentation laptops, video conferencing systems, and media players on a single display. For digital signage applications, it enables scheduled switching between content sources across retail displays, informational kiosks, or transportation hubs.
Home theater enthusiasts benefit from consolidating gaming consoles, streaming devices, Blu-ray players, and cable boxes to one television without constant cable swapping. In control rooms or security monitoring setups, the switch allows operators to cycle through multiple camera feeds or computer outputs on a primary monitor. The compact size and mounting kit facilitate clean installations in AV racks, behind televisions, or under desks.
Conference Room AV
Switch between laptop presentations, video calls, and media playback on a shared display with automatic or remote-controlled source selection.
Digital Signage Management
Cycle through multiple content sources on public displays for advertising, information, or wayfinding applications with scheduled or manual switching.
Physical Profile
The switch features a slim, durable chassis measuring 2.60 inches in width, 6.10 inches in depth, and 0.80 inches in height. This compact footprint allows discreet placement in tight spaces while maintaining robust connectivity. Weighing just 10.26 ounces, it is lightweight yet sturdy enough for permanent installations. The included mounting kit supports secure attachment to racks, walls, or furniture, ensuring stable operation in professional environments.
- Width
- 2.60" (66.04 mm)
- Depth
- 6.10" (154.94 mm)
- Height
- 0.80" (20.32 mm)
- Weight
- 10.26 oz (291 g)
What's in the Box
The package includes all necessary components for immediate setup and operation.
Highlights
- Supports Ultra HD 4K resolution at 3840×2160 for crisp image quality
- Routes four HDMI sources to one display with fast switching technology
- Automatic, priority, or manual switching modes for flexible operation
- EDID copy support ensures accurate display output settings
- Versatile audio configuration with 5.1 or 7.1 surround sound
- Includes IR remote control for convenient operation
- RS-232 serial control interface for integration with automation systems
- Backward compatible with high-definition 1080p content
- Compact design with mounting kit for easy installation
- 2-year limited warranty with TAA compliance
Specifications
| Specifications | |
|---|---|
| Manufacturer | StarTech.com |
| Manufacturer Part Number | VS421HD4KA |
| Brand Name | StarTech.com |
| Product Name | 4-Port HDMI Automatic Video Switch - 4K with Fast Switching |
| Packaged Quantity | 1 Each |
| Product Type | Audio/Video Switchbox |
| Technical Information | |
| Connectivity Technology | Cable |
| Number of Input Devices Supported | 4 |
| Device Supported | Display,Projector,Computer,Set-top Box,Gaming Console,A/V Receiver,DVD Player,Blu-ray Disc Player |
| Number of Displays Supported | 1 |
| Video | |
| Graphics Modes | 4K |
| Maximum Video Resolution | 3840 × 2160 |
| Interfaces/Ports | |
| HDMI In | Yes |
| HDMI Out | Yes |
| Number of HDMI Inputs | 4 |
| Number of HDMI Outputs | 1 |
| Physical Characteristics | |
| Height | 0.80" (20.32 mm) |
| Width | 2.60" (66.04 mm) |
| Depth | 6.10" (154.94 mm) |
| Weight (Approximate) | 10.26 oz (291 g) |
| Miscellaneous | |
| Package Contents | 4-Port HDMI Automatic Video Switch - 4K with Fast Switching 1 x Remote Control 1 x Universal Power Adapter (NA/EU/UK/AU) 1 x RJ11 Cable 1 x RJ11 to DB-9 Serial Adapter 1 x Mounting Kit 1 x Quick Start Guide |
| Environmentally Friendly | Yes |
| Country of Origin | Taiwan |
| TAA Compliant | Yes |
| Warranty | |
| Limited Warranty | 2 Year |
User Manual
FAQ
What video resolution does this HDMI switch support?
The StarTech.com VS421HD4KA supports Ultra HD 4K resolution at 3840×2160 pixels. It handles 4K video at 60Hz with full HDMI 2.0 compatibility, delivering high-quality imagery for modern displays and projectors. The switch also maintains backward compatibility with 1080p HD content, ensuring reliable performance across both current and legacy video sources.
How many devices can I connect to this switch?
This switch provides four HDMI inputs for connecting multiple source devices simultaneously. You can connect displays, projectors, computers, set-top boxes, gaming consoles, AV receivers, DVD players, or Blu-ray disc players. The single HDMI output routes the selected source to your target display, making it ideal for managing up to four different video feeds in various professional or entertainment setups.
What control methods are available for switching between sources?
The VS421HD4KA offers multiple control methods: automatic sensing switches to active inputs, priority switching follows a predefined hierarchy, and manual selection allows direct source choice. It includes an IR remote for convenient operation and supports RS-232 serial control via the provided RJ11 cable and DB-9 adapter. This flexibility suits both simple user-operated setups and advanced automated systems.
Does this switch support surround sound audio?
Yes, the switch supports versatile audio configurations including both 5.1 and 7.1 surround sound formats. This allows immersive audio experiences for home theaters, gaming setups, or professional AV environments. The HDMI connectivity carries both video and audio signals, ensuring synchronized output without separate audio cabling for compatible systems.
What is included in the package with the switch?
The package includes the 4-port HDMI switch itself, an IR remote control, a universal power adapter compatible with NA/EU/UK/AU outlets, an RJ11 cable for serial connections, an RJ11 to DB-9 serial adapter, a mounting kit for secure installation, and a quick start guide. These accessories provide everything needed for immediate setup and operation in various configurations.
What are the physical dimensions and installation options?
The switch measures 2.60 inches wide, 6.10 inches deep, and 0.80 inches high, with a weight of 10.26 ounces. Its compact design allows placement in tight spaces like behind displays or in AV racks. The included mounting kit supports secure attachment to racks, walls, or furniture, ensuring stable operation in permanent installations while maintaining a low-profile appearance.
| Qty | Price | Available |
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