Beginner’s Guide To Hdmi: Features, Specs, Speeds And Release Dates

With over 4 billion HDMI devices been sold, chances are that your consumer electronic in your office or home supports HDMI standard. HDMI short for High-Definition Multimedia Interface is a video/audio standard for transferring uncompressed audio and video data for consumer electronics. HDMI is so popular it’s everywhere and on almost everything, from your laptop, to smart TV, to projector, decoder, digital camera, camcorder, desktop among others.

HDMI standard was first released in 2003 with an alliance of some of top electronics companies including Hitachi, Panasonic, Philips, Silicon Image, Sony, Thomson, RCA and Toshiba and enjoys support from some of top movie production houses such as Fox, Universal, Warner Bros. and Disney.

HDMI is not only used to transfer uncompressed audio/video data to compatible video displays such as your Smart TV or PC Monitor, but it is also be used to remotely control other devices and share internet between devices.

HDMI-CEC: One remote to rule them all

HDMI-CEC where CEC means Consumer Electronics Control is an HDMI feature which allows you to remotely control a CEC-compliant device via remote control. Let’s say you have a Blu-Ray or DVD-Player or even a decoder connected to your TV via HDMI. You can control playback on the DVD player using your Smart TV’s remote instead of using the DVD’s remote and vice-versa. This is really important because it helps you organize your living room with just one remote that controls everything.

HDMI Ethernet Channel: Share internet between devices

If you want to share internet between connected devices, HDMI can help you do that too using a feature called HDMI Ethernet Channel (HEC). For instance let’s say you have a Playstation 4 or even Xbox One connected to your smart TV which in-turn is connected to the home WiFi. If your PS4 needs to make some online updates, instead of hooking it up to the WiFi, it could simply use your Smart TV’s internet connection to get online. HEC provides a data link as fast as 100Mbits/s which is fast enough to pull those updates.

HDMI-ARC: Connect your TV to an A/V receiver or speaker

Short for Audio Return Channel (ARC), HDMI-ARC is the audio link that sends audio out of your Smart TV to say a loud speaker. Before HDMI-ARC, you needed to have a separate way of connecting your smart TV to a loudspeaker for instance using an optical TOSLink or coax cable. But now you can do that by connecting the TV and your speaker or an A/V receiver via the HDMI-ARC port of your TV. This comes in handy if for instance you are playing Youtube or Netflix from your Smart TV and wish to have better sound output from an auxiliary speaker than what your in-built TV speakers can provide.

High-bandwidth Digital Content Protection (HDCP)

Because most of the video/audio content you watch on your TV is copyrighted, there has to be a way of protecting this content from pirates. This is exactly what HDCP is for.

HDMI Connector Types

There are five different HDMI connector types including Type A, B, C, D, and E. Type E is designed for automotive applications while Type B is a A 29-pin version of the HDMI connector, which has never been used. For ordinary users, Type A, C and D are the connectors you are most likely going to bump into.

HDMI connector plugs (male): Type D (Micro), Type C (Mini), and Type A. ~ Wikipedia

• Type A (standard): 13.9 mm × 4.45 mm, 19 pins used in HDTVs, Smart TVs, laptops, set-top-boxes, projectors, Blu-Ray, DVD players.
• Type C (Mini): 10.42 mm × 2.42 mm with Same 19-pin configuration intended for portable devices such as Cameras, camcorders.
• Type D(Micro): Measures 6.85 mm × 1.8 mm and looks like micro-USB connector and used in portable devices such as smartphones.

HDMI Cables

HDMI cables can be confusing at best. And cable vendors are out there to eat your lunch money with marketing buzzwords that have nothing to do with the standard specifications. So be on the lookout. Most HDMI cables are about 1.3m long although you can find those that are 5m+ long for special applications.

BlueRigger HDMI Cables

Generally there are about five different types of HDMI cables. It’s important to know which one is best for your particular use case and which one works with your devices. The cable you use must match with the kind of hdmi standard (later on that) your device(s) support. The HDMI cables depend on data speeds, resolution and various other features, therefore be sure to get the right cable which include the following;

• Standard HDMI Cable – up to 1080i and 720p
• Standard HDMI Cable with Ethernet
• Standard Automotive HDMI Cable
• High Speed HDMI Cable – 1080p, 4K 30 Hz, 3D and deep color
• High Speed HDMI Cable with Ethernet

HDMI Versions and release dates

HDMI specification/version has radically evolved over its 14 years lifetime so far. HDMI 1.0 was first released on December 9, 2002 with transfer speeds of 4.95 Gbit/s. Back then before HD and Full HD video standards were out, hdmi 1.0 seemed to be very fast.

HDMI 1.2 released in 2005 brought HDMI type A connectors for PC sources and added Consumer Electronic Control (CEC) support but nothing much changed in terms of bandwidth upgraded until HDMI 1.3 . Released last year, it clocked at 10.2 Gbits/s speeds and allowed deep color and output of Dolby TrueHD and DTS-HD Master Audio streams for external decoding by AV receivers.

HDMI 1.4 which came in 2009 was a major upgrade as it introduced Audio Return Channel(ARC), HDMI Ethernet Channel (HEC), a new Micro HDMI Connector, expanded set of color spaces, 3D formats and 2K 3840×2160 (Ultra HD) and 4K 4096×2160 resolutions.

HDMI 2.0 also known as HDMI UHD arrived in 2013 with increased speeds of up to 18 Gbit/s perfect to carry 4K high resolution videos. It also added support for allowing multiple users on the same screen, High Dynamic Range (HDR) video, improved 3D and additional CEC features. HDMI 2.1 released in 2017 increased speeds to 48 Gbits/s, higher refresh rates, higher resolutions of 4K, 5K, 8K and 10K.

HDMI is evolving as audio and video formats and resolutions change. It’s important that you take note of the HDMI specification that is supported by your device before purchasing the corresponding cable.

Image: kindleontv.com

David Okwii is the Editor-in-Chief of Dignited.com and a seasoned tech enthusiast whose journey began in the early 2000s. He started blogging while at university, diving deep into mobile apps, smartphone reviews, and operating systems—from testing Linux distros to tweaking Windows machines. David also explores Chromebooks, experiments with Raspberry Pi projects, and brings hands-on curiosity to every review. With vast experience in Uganda’s tech ecosystem and deep knowledge of Africa’s startup landscape, he offers informed, grounded perspectives on consumer technology. When he’s not writing or tinkering, David enjoys connecting with nature and exploring the outdoors.

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Talkio Mobile , Uganda’s newest telecommunications service provider, is excited to announce a groundbreaking partnership with Banana Life Investments, a leading chain of mobile phone and retail shops. This strategic alliance aims to bring Talkio’s innovative telecom services closer to Ugandans.

This collaboration will leverage Banana Life Investments’ extensive retail network of 26 stores strategically located across Uganda in major malls, towns, and cities to provide customers with unparalleled convenience. Through this partnership, Talkio Mobile will offer its full suite of services, including SIM cards, airtime, and exclusive product offerings at any Banana Life Investment location.

This partnership is more than a business initiative—it’s a shared commitment to transforming lives. By integrating Talkio Mobile’s forward-thinking services & nationwide reach with Banana Life Investments’ retail footprint, the two brands are setting a new standard for customer convenience and inclusivity.

READ ALSO: 5 Things You Need to Know About Talkio Mobile: New Telecom Company in Uganda

“This partnership aligns perfectly with our mission of connecting Ugandans to innovative and transformative telecom solutions,” said Vianne Allan Ahura, CEO of Talkio Mobile. “By leveraging Banana Life Investments’ trusted presence and nationwide footprint, we are not only expanding our agent network but also bringing our services closer to the communities we serve. This collaboration ensures that our online customers can now enjoy a seamless offline experience right at their doorstep. Together, we are empowering Ugandans with the tools they need to stay connected, grow their businesses, and unlock new opportunities.”

Solomon Ssemuyaba, the assistant general manager at Banana Life Investments, echoed this sentiment: “We are proud to join hands with Talkio Mobile to deliver innovative, customer-centric solutions. This partnership represents our shared vision of fostering a connected future for Uganda. Together, we are redefining what convenience and accessibility mean for our customers.”

The partnership goes beyond retail distribution, introducing joint initiatives aimed at value addition and personalized service. Customers can expect seamless access to:

• SIM Card Sales : Available at all Banana Life Investments locations.
• Talkio phone number bookings : Book your preferred Talkio number at any Banana Life Investments location.
• Airtime Services : Recharge easily through in-store purchases.
• Customer Support : Friendly and knowledgeable staff trained to assist with Talkio Mobile products and services.

Additionally, the two companies plan to launch promotional campaigns and expand services to even more locations, ensuring no Ugandan is left behind in the digital transformation.

Solomon Obwot is a tech writer based in Kampala, Uganda, with extensive experience in the local tech startup ecosystem. He covers the latest news and analysis on consumer tech, writes in-depth smartphone reviews, and conducts insightful interviews with industry experts. Solomon is also a passionate podcaster, sharing his knowledge and engaging in discussions about Africa’s rapidly growing tech landscape. Send emails to [email protected]

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The Mobile World Congress (MWC) Barcelona , the world’s largest exhibition for the mobile industry, has just concluded. This annual event gathers leading technology brands to unveil groundbreaking mobile, AI, and digital solutions innovations. At MWC 2025, TECNO showcased a range of AI-driven products, reinforcing its commitment to cutting-edge technology.

The key launches included:

• CAMON 40 Series – AI-powered smartphones with One-Tap FlashSnap and advanced mobile imaging features.
• MEGABOOK S14 – The world’s lightest 14-inch OLED laptop, featuring AI-enhanced multitasking and Snapdragon® X Elite.
• MEGABOOK T14 Air & K15S – Lightweight ultrabooks with AI capabilities and extended battery life.
• TECNO AI Glasses Series – Smart eyewear integrating AI imaging, translation, and AR display.

Jan Stryjak, Associate Director at Counterpoint Research, shared, “In the past year, we have observed significant advancements in the field of AI. AI will continue to drive transformative changes in our daily lives. In this critical period for the economic development of emerging markets, TECNO’s AI technologies are unlocking potential for diverse needs.”

“The application of AI technologies is crucial and urgent in emerging markets. We’re committed to bridging the digital gap between emerging and mature markets,” said TECNO CMO, Laury Bai. “TECNO is taking a practical approach to make AI more accessible, ensuring users in emerging markets can access AI and cutting-edge technologies.”

Laury Bai, TECNO CMO

Driven by its commitment, TECNO has forged a robust partnership with MediaTek, establishing a joint AI laboratory dedicated to accelerating advancements in AI. At the event, James Chen, Vice President of Product and Technology Marketing at MediaTek, emphasized, “The synergistic R&D efforts between TECNO and MediaTek are set to democratize AI technology. Our collaboration powers a seamless, interconnected AI experience, bringing users a future of truly connected intelligence.”

James Chen, Vice President, Product and Technology Marketing at MediaTek

CAMON 40 Series Powered by AI One-Tap FlashSnap Revolutionizes Smartphone Snapshot Photography

TECNO’s Global Product Launch Officer, Olivier Mas, officially unveiled TECNO’s next-generation AI-driven products. Attendees at TECNO’s launch event witnessed the highly anticipated debut of TECNO’s new CAMON 40 Series, a device that embodies TECNO’s legacy of excellence in mobile imaging. Featuring One-Tap FlashSnap Mode and TECNO AI, the series sets a new benchmark in smartphone photography, delivering exceptional snapshot capabilities and AI-enhanced user experiences.

Olivier Mas, TECNO Global Product Launch Officer

The CAMON 40 Series exemplifies a commitment to innovation that transcends hardware and software, extending into strategic partnerships that deliver cutting-edge AI solutions to emerging markets. Matt Waldbusser, Managing Director of Global Solutions and Consumer AI at Google Cloud, remarked, “Our collaboration with TECNO on the CAMON 40 Series is a standout example. Leveraging Google Cloud’s capabilities, we’ve introduced groundbreaking features such as Ask Ella, AI Image Generator, AI Writing, and AI Translate. I am particularly impressed by the industry-leading and competitive edge of some of these innovations. For instance, TECNO’s AI supports text translation in 136 languages, voice translation in 44 languages, and photo translation in 51 languages. We are excited to further strengthen our partnership with TECNO, unlocking limitless potential to bring advanced yet practical AI capabilities to emerging markets in a convenient and secure manner.”

Matt Waldbusser, Managing Director of Global Solutions and Consumer AI at Google Cloud

The CAMON 40 Series’ innovative One-Tap FlashSnap leverages AI to enhance imaging capabilities, revolutionizing mobile photography. AI optimizes camera startup and continuous shooting for instant captures, while AI-powered multi-frame processing intelligently reduces noise and enhances details, delivering sharper, more refined images. Additionally, the BestMoment algorithm analyzes motion patterns, automatically selecting the optimal frames for precise, high-quality shots in dynamic scenarios, ensuring users an unparalleled mobile imaging experience.

TECNO CAMON 40 Demonstrates the Cutting-Edge FlashSnap Capability

To delve deeper into the imaging prowess of the CAMON 40 Series, TECNO invited Frédéric Guichard, CEO of DXOMARK, to share the image performance of CAMON 40 Pro. Frédéric highlighted, “The CAMON 40 Pro 5G has demonstrated exceptional imaging and performance capabilities in our rigorous evaluations. We’ve been particularly impressed with photo performance being the best for devices under 600$, and the 1st eligible device to our Smart Choice Label.”

Onsite photo of Frédéric Guichard, CEO of DXOMARK

Beyond its advanced rapid-capture functionality, the integration of TECNO AI further enhances the device’s capabilities. Intelligent imaging, a 360° AI Call Assistant, and productivity tools elevate creativity and efficiency. Powered by MediaTek’s latest chipsets, the series ensures smooth performance, fast processing, and extended battery life. With a sleek, durable, and water-resistant design, it seamlessly blends style with practicality for modern users.

MEGABOOK S14, the World’s Lightest 14-inch OLED Laptop, Inspires Creators and Game Lovers

The MEGABOOK S14 is TECNO’s first OLED laptop and the industry’s lightest 14-inch OLED laptop, featuring a 2.8K OLED display and incredibly weighing only 899g (31.7oz). The laptop is equipped with the outstanding power of the Snapdragon® X Elite compute platform, the flagship chipset for AI PCs from Qualcomm Technologies, and integrates TECNO’s world’s first self-developed edge-side large-scale AI model, to achieve AI-enhanced multitasking.

World’s Lightest 14-inch Laptop MEGABOOK S14

Specifically designed for next-gen AI productivity, TECNO AI enhances the Ella AI Assistant, AI-powered PPT generation, AI-driven image search, smart albums, and offline meeting transcription with multilingual support. The External Graphics Dock, equipped with a powerful NVIDIA graphic card, delivers scalable, high-performance capabilities for design, gaming, and content creation. The laptop’s 2.8K OLED display with a 120Hz refresh rate ensures exceptional visuals, while DTS:X Ultra dual 2W speakers, Wi-Fi 6E, fingerprint login, and PC Manager optimize connectivity and user experience.

TECNO’s strategic partnership with Qualcomm Technologies was a highlight of the TECNO AI Ecosystem Product Launch event, demonstrating a shared vision for the future of AI PCs. Kedar Kondap, SVP & GM of Compute and Gaming at Qualcomm, took the stage to discuss the integration of Qualcomm’s cutting-edge PC chipset into the new MEGABOOK S14 laptop, underscoring TECNO’s commitment to delivering high-performance computing solutions.

Kedar Kondap, SVP & GM of Compute and Gaming at Qualcomm

In addition, TECNO also introduced several standout new products. The featherlight 999g (35.2oz) ultrabook MEGABOOK T14 Air, features high-speed storage and LPDDR5 memory, while the ultra-thin, all-metal MEGABOOK K15S, equipped with a powerful 70Wh battery and supported by a 65W PD GaN charger, offers a smarter and more long-lasting user experience. Both devices are empowered by TECNO AI with advanced AI capabilities such as AI Album and AI Voice Assistant, making them perfect companions for all aspects of life.

The Next Game-Changing Tech Innovation: See the World with the TECNO AI Glasses Series

TECNO’s new AI Glasses Series also took center stage with the introduction of TECNO AI Glasses Pro and TECNO AI Glasses, reimagining eyewear with cutting-edge imaging, intelligent interactions, and a sleek aesthetic. The TECNO AI Glasses feature an aviator design, while the Pro model showcases a browline style, both embodying timeless elegance and modern fashion.

TECNO AI Glasses Redefine the Way People See the Future

Equipped with a 50MP high-definition camera, the series integrates an OV50D sensor, a 100° ultra-wide-angle custom lens, and an AI ISP imaging chip, forming a mobile-grade imaging system. This system lets users capture stunning, high-resolution photos with advanced AI noise reduction and HDR capabilities. With real-time translation supporting over 100 languages, TECNO AI’s Ella empowers accurate translation even for less common languages, as well as voice control, AI-powered object recognition, and intelligent information summaries for ultimate convenience.

Additionally, the AI Glasses Pro features a MicroLED display with 7th-gen resin waveguide technology, offering a 30° field of view, over 1,500 nits of brightness AR display, and a lightweight, ultra-thin design. The AR display allows users to effortlessly enjoy features like translation display, navigation, information prompts, and teleprompting.

Equipped with a 250mAh battery, these glasses offer over 11 hours of music playback and 8 hours of mixed use with just 30 minutes of charging. An advanced ultra-linear speaker, bass enhancement, and spatial sound deliver an immersive audio experience, while Wi-Fi 6 and Bluetooth 5.4 ensure seamless connectivity.

With these innovative launches, TECNO is setting new standards in mobile imaging and AI-enhanced technology, shaping a more connected and empowered future for consumers in emerging markets. Once again, TECNO has showcased its cutting-edge innovation on the global stage at MWC. With the brand essence of “Stop at Nothing”, TECNO’s relentless pursuit of innovation is making AI-powered technology more accessible, allowing consumers to experience the future ahead of time.

Solomon Obwot is a tech writer based in Kampala, Uganda, with extensive experience in the local tech startup ecosystem. He covers the latest news and analysis on consumer tech, writes in-depth smartphone reviews, and conducts insightful interviews with industry experts. Solomon is also a passionate podcaster, sharing his knowledge and engaging in discussions about Africa’s rapidly growing tech landscape. Send emails to [email protected]

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