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Power over HDBaseT (PoH) carries DC power alongside data over one HDBaseT category cable. The HDBaseT Alliance describes it as based on IEEE 802.3at, modified to deliver up to 100 W over four cable pairs for distances up to 100 m. That 100 W is a source-side headline rating, not a promise of 100 W at the remote device.
How Power over HDBaseT works
HDBaseT can carry audio/video and other signals over category cable. PoH adds DC power to that link, allowing compatible equipment at one end to power a device at the other over the same cable. The Alliance describes PoH as a modification of IEEE 802.3at intended to support safe power delivery across all four cable pairs. HDBaseT Alliance: Introduction to Power over HDBaseT
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PoH is a feature of an HDBaseT connection, not a guarantee that any Ethernet cable, PoE equipment, or powered device will work with it. Both endpoints must support the relevant PoH implementation and classification.
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The often-quoted “up to 100 W” figure describes the Alliance’s headline rating for four-pair PoH at distances up to 100 m. Power at the transmitter and power available to the remote device are different measurement points: some power is lost along the cable.
#1 Best Overall
- 4K@120Hz HDMI Extender over CAT5e/6/7 – HDBaseT Technology | Transmit uncompressed 4K Ultra HD video up to 400 feet with zero latency over a single Ethernet cable | Delivers lossless, lag-free performance ideal for gaming, home theater, and professional AV setups | Bi-directional IR pass-through allows remote control from either source or display location.
- Advanced HDMI 2.1 Support – Up to 8K Resolution | Supports HDMI 2.1, HDCP 2.3 with resolutions up to 8K@30Hz, 4K@120Hz, 4K@60Hz (UHD), and 2K@60Hz with full YUV 4:4:4 color | Compatible with HDR, HDR10+, Dolby Vision, HLG, VRR, FVA, and ALLM for ultra-smooth and vibrant visuals | Delivers 40 Gbps FRL & 18 Gbps TMDS bandwidth for uncompressed high-speed transmission | Passes DTS-HD, Dolby TrueHD, 7.1-channel digital audio, and all HDMI-standard audio formats | CEC and PoC (Power over Cable) supported for simplified setup and control.
- 8K & 4K Long-Range Transmission with PoC | Extend 8K@30Hz signals up to 300 feet and 4K@120Hz up to 400 feet over a single CAT cable | RS-232 port for command and control integration with professional AV systems | Power over Cable (PoC) enables operation with just one power adapter at either the transmitter or receiver—no need for dual power sources.
- OREI HDBaseT models are designed to work only with their own matching transmitter and receiver. They are not interchangeable with other OREI HDBaseT models, nor compatible with HDBaseT devices from other brands, due to chipset differences. For best results, always use the included or recommended pair from the same model.
- Complete OREI Professional Solution | Backed by full OREI support and a 1-Year Warranty for peace of mind | Package includes: 1x HDMI Transmitter, 1x HDMI Receiver, 1x Power Adapter (PoC-enabled), 1x Bi-directional IR Kit, 1x Set of Mounting Ears, and a User Manual for easy setup and installation.
| Configuration or rating point | Power figure | Source and qualification |
|---|---|---|
| Two-pair PoH Type 3, PSE output | 47.5 W | Microchip Technology, 2020 application-note comparison |
| Four-pair PoH Type 3, PSE output | 95 W | Microchip Technology, 2020 application-note comparison |
| HDBaseT Type 3, powered-device input after a 100 m cable | 72.4 W | Microchip Technology, 2020 application-note comparison; guaranteed figure at the PD input |
These figures should not be treated as interchangeable. When checking whether a link can power a device, compare the device’s requirement with power available at the powered-device input, not just the source output or the 100 W headline. Microchip also notes that PoH follows IEEE 802.3at Type 2 cable types, while its higher supported current limits how many cables may be placed in a bundle. Microchip application note, “Designing a PoE PD Using PD702x0 and PD701x0” (2020)
Why compatibility and classification matter
PoH has specific classification behavior. Microchip says Type 3 classification is mandatory for PoH and that the powered device recognizes three-event classification and an HDBaseT flag. That makes PoH more than a matter of matching a cable plug or a nominal wattage: the equipment must identify and support the expected power arrangement.
Rank #2
- 1080p HDMI Extender Balun: The OREI EX-500IR is a professional 1080p HDMI over ethernet solution that sends Full HD 1080p@60 Hz video and audio signals up to 500 feet through one CAT 5e/6/7 cable without signal loss or bulky long hdmi cable; Supports HDBaseT Technology for lossless and lag-free long distance video transmission
- Crystal Clear Full HD Video: This hdmi to ethernet adapter supports HDMI & HDCP 1.4 compliant, HDR, and 8-bit color for sharp visuals and smooth playback; HDMI loop out allows local screen viewing while extending to a remote display; Supports LPCM 7.1CH, Dolby Digital, DTS 5.1, Dolby True HD, Dolby Atmos for immersive sound performance
- Easy Remote Control: The HDMI balun supports two-way IR pass-through, enabling control of streaming devices from either the transmitter or receiver side. It also features RS-232 command control and Power over Cable, requiring only a single power adapter connected to either unit to power both the transmitter and receiver
- Wide Device Compatibility: Works with TVs, monitors, projectors, gaming consoles, Blu-ray players, laptops, and AV receivers; It’s perfect for professional business use, home theaters, digital signage, and conference rooms that need reliable hdmi over cat6 connectivity
- What You Get: HDMI transmitter and receiver, IR TX/RX cables, power adapter, mounting kit and user manual; Backed by 12-month warranty and OREI tech support; OREI HDBaseT Extenders models only work with their matching transmitter and receiver. They are not interchangeable with other OREI or third-party HDBaseT devices due to chipset differences
Do not assume a generic PoE injector or PoE switch is interchangeable with an HDBaseT PoH transmitter/receiver pair. The cited technical documentation describes PoH-specific classification and does not establish universal cross-compatibility. Check the manuals for the exact source, receiver, and powered device before connecting them.
What to check before choosing equipment or cable
- Confirm PoH support at both ends. Check the exact transmitter/receiver or source/sink documentation; HDBaseT support alone does not establish that PoH is supported.
- Check the remote power requirement. Compare it with the available power at the powered-device input for the intended configuration and cable run.
- Verify classification compatibility. Confirm that the equipment supports the required PoH classification and HDBaseT signaling.
- Match the cable to the installation. Account for distance, power carriage, and HDBaseT data performance, and follow the equipment manufacturers’ cable guidance.
- Verify any certification claim. Consult the relevant current product documentation or catalogue rather than relying on a generic claim that a cable is “HDBaseT” or “PoH certified.” The HDBaseT Alliance site provides current overview and catalogue links.
Cable qualification matters because a cable must support both power carriage and HDBaseT signal performance. In a 2017 announcement, the HDBaseT Alliance and UL described a cable-certification program intended to assess both. The announcement said UL would evaluate cables under the then soon-to-be-published UL 4299 Outline of Investigation and described inspections and ongoing testing as part of surveillance. This is historical program context, not confirmation of the document’s current status or certification of a particular cable listing. HDBaseT Alliance and UL, cable certification announcement (February 7, 2017)
Quick Recap
Best Value
- Important Noted: The package is ONLY inlcuded a HDBT Transmitter which use in combination with MT-VIKI Modular Matrix Switcher HDBaseT Cards, not included a Receiver, If you need, pls search ASIN:B0FMY5FQNB
- This HDMI HDBT Transmitter can Extend 1080P up to 230 feet (70 meters) or 4K@60Hz (4:2:0) up to 130 feet (40 meters) over Cat5e/6 UTP cable. Support 1080P 3D. The video is transmitted using uncompressed HDT technology.
- BI-DIRECTIONAL IR: Extends IR signal from source to receiver or from transmitter to receiver.
- POWER OVER CABLE: Only the transmitter needs power adapter, the receiver power via ethernet. 【If use it in combination with MT-VIKI Modular Matrix Switcher POE HDBaseT Cards, then neither TX nor RX needs to be connected to the power supply.】
- Package: 1x HDMI HDBT Transmitter, 1 x IR Tx Cables, 1 x IR Rx Cables 1 x Power Adapter, 1 x Mount Kits, 1x Phoenix terminal, 1 X User Manual
Rank #4
- Extend HDMI Up to 4K@60Hz HDR or Non-HDR: Transmit video signals up to 230 feet (70 meters) over a single Cat6/Cat7 Ethernet cable. The device comes with a dual-voltage power supply using a US plug, plus an adapter/converter for international use.
- Full HDMI & Audio Support: HDMI 2.0, HDCP 2.2/1.4, and DVI 1.0 compliant. Supports resolutions up to 4K@60Hz RGB/YCbCr 4:4:4, YCbCr 4:2:2, 2K@60Hz. Audio formats include LPCM, Dolby Digital/Plus/EX, Dolby TrueHD, DTS, DTS-EX, DTS-96/24, DTS High Res, DTS-HD Master Audio, and DSD.
- Power Over Cable (POC): Only the receiver unit requires connection to power; the transmitter receives power automatically through the Ethernet cable. Reduces cable clutter and simplifies installation.
- Two-Way IR & RS-232 Control: Enables full remote control of your source devices from the display location, perfect for home theater, conference rooms, classrooms, churches, or trade show setups.
- Model Compatibility Notice: OREI HDBaseT kits work only with their matching transmitter and receiver. Not compatible with other OREI HDBaseT models or third-party HDBaseT devices due to chipset differences. Always use the included or recommended pair for best performance.
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