StarTech.com 66ft (20m) Active HDMI Cable - 4K High Speed HDMI Cable with Ethernet - CL2 Rated for In-Wall Install - 4K 30Hz Video - HDMI 1.4 Cord - For HDMI Monitor, Projector, TV, Display

Manufacturer: Startech | Model: HDMM20MA | Product ID: 1229 | Warranty: 2 Years
£75.27 (inc. VAT)
41 in stock
100% Money Back Guarantee - Risk Free

Product Technical Specification

Features
Cable length20
Connector 1HDMI Type A (Standard)
Connector 2HDMI Type A (Standard)
Connector 1 genderMale connector
Connector 2 genderMale connector
Connector 1 form factorStraight
Connector 2 form factorStraight
Product colourBlack
HDMI version1.4b
3DYes
Supported graphics resolutions1920 x 1080 (HD 1080),3840 x 2160,4096 x 2160
Dolby technologiesDolby TrueHD,Dolby Digital Plus
Audio Return Channel (ARC)Yes
HDMI Ethernet channelYes
HDCPYes
HDCP version1.4
Supported digital audio channels (uncompressed)5.1,8,7.1
AWG wire size28
Connector contacts platingGold
Cable jacket materialPolyvinyl chloride (PVC)
Cable shieldingAluminum mylar foil
Fire-resistance ratingCL2
Plug and PlayYes
Quantity per pack1
Weight & dimensions
Cable diameter7.5
Weight1400
Package width326
Package depth338
Package height82
Package weight1700
Technical details
Sustainability certificatesRoHS,CE
Logistics data
Harmonized System (HS) code84733080
Master (outer) case width348
Master (outer) case length343
Master (outer) case height279
Products per master (outer) case3

Delivery Options

Economy Delivery
FREE
Economy Delivery

Economy Delivery (UK)

Estimated delivery date: Wed 26th Aug 2026 to Sat 29th Aug 2026
Business Express
£6.95
Business Express

Business Express

Estimated delivery date: Tue 25th Aug 2026 to Thu 27th Aug 2026
View all Delivery Options & International Rates
Connect your HDMI devices, up to 20m away with no signal lossThis active HDMI® cable offers a connection distance of up to 65 feet (20 meters) between your HDMI enabled devices. It meets CL2 rating safety requirements, so it’s ideal for in-wall cable runs in your home and office installations.Dependable connections over longer distancesThe cable features built-in amplifier circuitry which actively boosts your HDMI signal, with no external power required. It's the perfect solution for longer transmissions without any signal loss.Run in-wall cable installationsThe HDMI cable is CL2 rated for in-wall installations, which makes them perfect for A/V installations in residential or office settings. You can set up your home theatre, gaming or audio-video equipment with the cables hidden away safely inside the walls and place your devices as needed throughout your work or living space.Deliver astonishing 4k videoThis high-quality HDMI cable fully supports 1080p+ resolutions at up to 120Hz refresh rate, with life-like color. To accommodate the demands of future high-definition devices, such as increased resolutions and higher frame rates, this Ultra HD cable supports resolutions up to 4k x 2k.The HDMM20MA is backed by StarTech.com's 2-year Warranty for guaranteed reliability.Note : This cable features unidirectional architecture which requires that the cable is installed in the correct direction. Please refer to the Source and Display labels on the HDMI connectors in order to ensure that the device and the HDMI source are connected properly.The StarTech.com Advantage
Features
Cable length20
Connector 1HDMI Type A (Standard)
Connector 2HDMI Type A (Standard)
Connector 1 genderMale connector
Connector 2 genderMale connector
Connector 1 form factorStraight
Connector 2 form factorStraight
Product colourBlack
HDMI version1.4b
3DYes
Supported graphics resolutions1920 x 1080 (HD 1080),3840 x 2160,4096 x 2160
Dolby technologiesDolby TrueHD,Dolby Digital Plus
Audio Return Channel (ARC)Yes
HDMI Ethernet channelYes
HDCPYes
HDCP version1.4
Supported digital audio channels (uncompressed)5.1,8,7.1
AWG wire size28
Connector contacts platingGold
Cable jacket materialPolyvinyl chloride (PVC)
Cable shieldingAluminum mylar foil
Fire-resistance ratingCL2
Plug and PlayYes
Quantity per pack1
Weight & dimensions
Cable diameter7.5
Weight1400
Package width326
Package depth338
Package height82
Package weight1700
Technical details
Sustainability certificatesRoHS,CE
Logistics data
Harmonized System (HS) code84733080
Master (outer) case width348
Master (outer) case length343
Master (outer) case height279
Products per master (outer) case3

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Buykingston order despatch times:

We will despatch your order the very same day if we receive cleared payment by 12:00 pm Mon-Fri.

These delivery estimates apply when you order up to 12:00 pm Mon-Fri (excluding public holidays).

We charge a one off delivery cost as outlined below regardless of how many items you order or the weight of your order.

Estimated delivery times are provided to us by the respective delivery companies. We pass this information onto you, the customer.

Despatch times do not apply to UK public holidays.

Estimated delivery times are taken from the next available working day available for delivery. For example if an order was despatched on a working Wednesday by 3pm, the first available working day for delivery would be Thursday provided you placed your order by 3pm on the Wednesday. If the next available weekday is a UK bank holiday/public holiday then your order will be despatched on the next available working day.

Our warehouse reserves the right to upgrade the delivery method you select on your order.

Our available delivery options*

Contact us for a shipping quote.

*All delivery times are estimated unless stated.

Product Returns Note

Buykingston offers a simple, hassle-free returns policy. If for whatever reason you are not happy with the item purchased, you can return it to us within 14 days of receipt for a refund. This applies to items purchased direct through Buykingston only.

Our 14 Day Returns Money Back Guarantee:
For items returned in resaleable condition, with all original packaging. If an item has been opened for inspection but shows signs of use beyond that, a deduction may apply to reflect the reduced value — see our full Terms & Conditions (Section 12) for details.

Some items are excluded from our money-back guarantee unless they have developed a fault. These include:

- Headphones
- Earphones
- Custom made and designed products, such as flash memory products with custom logos on them, e.g. USB flash drives and memory cards with your own logo

Returns FAQs

What is your returns criteria?
14 days from date of receipt, or expected date of receipt on non-tracked items.

How do I go about returning my order?
Please contact us via our contact page with your order number. We will provide you with an RMA number and return instructions, including your return deadline and whether a freepost label applies to your order.

Do I need to contact you before returning my order?
Yes, to obtain an RMA number before sending anything back.

Does my item have to include its original packaging?
Yes, to qualify for our 14 day money-back guarantee. For faulty items, we understand you may no longer have the original packaging.

Who pays for return postage?
If your item is faulty, damaged, or not as described, we cover reasonable return postage, or provide a freepost label where available. If you are returning an item for another reason (including simply changing your mind), you are responsible for return postage unless we have expressly confirmed a freepost label in your RMA email — we recommend using a tracked and insured service for items of significant value.

Who deals with the warranty on a faulty item?
We will. In some circumstances we may ask you to contact the manufacturer directly for assistance.

Please ensure you have read and comply in full with Sections 11–13 of our Terms & Conditions.