The primary function of this HDMI panel mount extension cable is to extend an internal HDMI audiovisual interface to an external equipment panel while providing a closable protective structure for the exposed HDMI female receptacle.
In industrial computers, automation equipment, and embedded display systems, HDMI ports are often located inside the equipment or on the rear of the enclosure. Operators may need to open the housing or move the entire device when connecting external displays or video capture equipment.
By installing an HDMI square flange panel mount extension cable, the HDMI interface can be positioned on the front, side, or external control panel of the equipment, allowing convenient connections to industrial displays, monitoring screens, and high-definition audiovisual equipment.
When the HDMI port is not in use, the threaded protective cap can cover the female receptacle, helping reduce direct exposure to dust, water droplets, and other external contaminants.
Product Features
Features a square four-hole flange for secure mounting on metal or plastic equipment panels, providing a stable HDMI interface for industrial control enclosures, embedded computers, and high-definition audiovisual equipment.
Features a passive HDMI Type-A female-to-male connection for extending high-definition audiovisual interfaces. The tethered threaded protective cap helps shield the unused port from dust and water droplets while reducing cap loss.
Available in four colors and three cable lengths of 0.3m, 0.5m, and 1m, offering 12 standard combinations for equipment design, port identification, internal cable routing, and OEM integration.
Products Specification
Why Is This Product Needed ?
Conventional HDMI extension cables generally use direct plug-in connections without dedicated panel-mounting structures or protective connector caps.
When used in industrial control cabinets, embedded computers, and outdoor electronic equipment, they may create problems such as unsecured connector positioning, dust accumulation around exposed ports, and inconvenient equipment maintenance.
This aviation-style HDMI square flange extension cable integrates high-definition audiovisual signal extension, four-hole panel mounting, and threaded cap protection into a single assembly.
Equipment manufacturers can provide an independent external HDMI connection point without changing the position of the internal HDMI host interface, simplifying external display connections and subsequent maintenance.
Typical Applications
◆ Center Mounting Hole
According to the supplied installation drawing, the center mounting hole diameter is Ø21.00±0.10mm and is designed to accommodate the circular body of the HDMI panel connector.
Before machining the panel, equipment manufacturers should confirm the final cutout dimensions according to the actual connector dimensions and assembly requirements.
◆ Four Flange Mounting Holes
The square flange uses a four-hole mounting structure, with each mounting hole having a diameter of Ø3.20±0.05mm.
The mounting holes are positioned around the center cutout and are designed to accommodate suitable fasteners for securing the connector to the equipment panel.
◆ Horizontal and Vertical Hole Spacing
The horizontal center-to-center distance between the mounting holes is 22.00±0.05mm, while the vertical center-to-center distance is also 22.00±0.05mm, forming a 22mm × 22mm square mounting hole pattern.
Equipment designers should also consider the flange outline dimensions, panel thickness, fastener installation clearance, and cable bending space behind the panel.
Three Cable Length Options
Each color is available in three cable lengths, providing a total of 12 color and length combinations.
Product Capabilities
Features HDMI Type-A connectors for digital audiovisual transmission between compatible devices, suitable for 4K Ultra HD display systems. Actual resolution, refresh rate, and color depth depend on cable bandwidth, signal sources, and display equipment. Support for 4K@60Hz, HDR, and 18Gbps transmission requires verification through complete connection testing.
Transmits compatible digital audio and video signals through a single HDMI connection, suitable for industrial monitors, HMI systems, and HD audiovisual equipment. Supported audio formats, channel configurations, and display functions depend on connected devices and the complete signal path. This passive extension cable does not provide independent audio decoding, video scaling, or format conversion.
The panel-mounted connector features a threaded protective cap that helps reduce direct exposure to dust, water droplets, and contaminants when properly tightened. Actual protection depends on the sealing structure, panel installation, and enclosure design. Any IP rating requires test verification, and equivalent protection should not be assumed when a standard HDMI cable is connected.
Products Drawing

Product FAQ
Is this an HDMI female-to-male extension cable ?
Yes. The product features an HDMI Type-A female receptacle at the panel end and a standard HDMI Type-A male plug at the opposite end, connected through an HDMI cable.
The HDMI male plug connects to an internal HDMI port, while the female receptacle is mounted on the external equipment panel to provide an accessible connection point for an external HDMI cable.
What mounting hole dimensions are required ?
According to the supplied installation drawing, the center mounting hole diameter is Ø21.00±0.10mm, the four mounting holes each have a diameter of Ø3.20±0.05mm, and both the horizontal and vertical hole center spacing are 22.00±0.05mm.
Before installation, verify the equipment panel cutout dimensions, panel thickness, and available rear mounting clearance.
Does this product support 4K@60Hz video transmission ?
The product is intended for 4K high-definition signal extension applications. However, support for 4K@60Hz must be verified according to the actual cable bandwidth, signal source, display equipment, and complete connection path.
Since 18Gbps bandwidth and 4K@60Hz test reports for this specific product have not been provided, 4K@60Hz output should not be guaranteed for every equipment combination solely based on the 4K product designation.
For projects with specific 4K@60Hz requirements, actual test data should be confirmed before bulk purchasing.
Is this product an HDMI signal converter ?
No. This product is a passive HDMI female-to-male extension assembly that provides only a physical connection between the corresponding HDMI interfaces.
It does not contain a video decoding chip, active signal amplification circuit, or protocol conversion module and therefore cannot convert HDMI into DisplayPort, VGA, USB-C, or other different video interface types.
Are all three cable lengths available in every color ?
Yes. The product is available in black, white, yellow, and blue. Each color offers three cable lengths: 0.3m, 0.5m, and 1m, providing a total of 12 color and length combinations.
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