A UGREEN 240W USB-C cable with an LCD contains more than a screen: a tiny IPS panel, a small PCB with voltage-regulation and backlight components, and an EN32LF056 microcontroller. The display reports voltage and current, but the controller is not wired to the USB data interface. That makes the cable interesting for electronics teardown and firmware experiments—not a straightforward way to add USB functions.
What the teardown found
In a teardown reported by Maya Posch for Hackaday on October 2, 2026, Aaron Christophel opened a UGREEN USB-C cable rated for 240W. Hackaday reported its price as €15 at the time; that is a dated report, not a current or universal price. Hackaday’s teardown identifies the product as a UGREEN 240W USB-C cable with an LCD display.
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The display and control
The cable has a small IPS LCD and a single touch control. The display shows reported voltage and current, giving a quick readout of charging conditions. The screen connects to the PCB through a flat-flex cable and connector.
The circuit board and microcontroller
The PCB includes multiple voltage regulators and a MOSFET used for the display backlight. Its MCU is marked EN32LF056. Probing the exposed SWD interface identified it as a Cortex-M0+ microcontroller with 64 kB of Flash and 4 kB of SRAM, as reported in the 2026 teardown.
#1 Best Overall
- 240W MAX Super-Fast Charging: The high speed usb c cable supports PD 100W protocol, 48V/5A high-power output, and can charge an iPhone 17 Pro Max to 50% in 20 minutes
- Intelligent Digital Display: Exclusive LED screen monitors charging status in real time: cyclically displays power (W), current (A), and voltage (V), with automatic switching every 3 seconds (display sequence: power → current → voltage), accurately monitoring device power input and preventing overcharging damage
- Efficient Dual-Channel Transmission: The usb c display cable supports 480Mbps data transfer speeds for ultra-fast file/video transfers; built-in E-Marker chip (located on the non-display side) ensures high power, safe, and stable operation
- Extremely Durable Design: 24-strand high-density braided cable resists tearing and abrasion, space gray aluminum terminal blocks dissipate heat and prevent oxidation, PC lens protects the screen against scratches (factory-installed with protective film), and certified for 10,000-cycle bend testing
- Flexible scenario adaptation: three sizes are available (1m for car, 2m for home, and 3m for conference projection), EMI certified and interference-free, compatible with Type-C devices such as iPhone 15-17 series, Samsung S25, and MacBook
How it is opened—and why it is not routine maintenance
The documented disassembly begins at the display cover, then removes the aluminium shell. The assembly may be held together with substantial glue; Christophel used side-cutters to remove the shell. This is destructive teardown, not a documented service procedure, and the report does not establish that the cable can be opened without damage.
Once open, the display’s flat-flex connection and the board become accessible. That does not make the cable a good candidate for casual repair: cutting or prying around a compact cable-end assembly risks damaging the enclosure, screen, wiring, or board.
Rank #2
- 【Smart Power Display】Real-time charging power visible, show charging status and signify high power process. Built-in smart chips monitoring the charging power and adjusting current and voltage automatically, avoiding damage to the battery in case of unstable current.(Please note display module just show charging power, it neither increase nor decrease charging current)
- 【Support 100W Fast Charging】Supports up to 100W(20V 5A) charging speed, with a max output of 100W charger, SooPii USB C to USB C cable can charge anything Type-C devices from phones to laptops. Pair with a 100W USB-C Power Delivery charger to power up a MacBook Pro 16ʺ in 2 hours. (NOTE: This is a data transfer and USB 2.0 version charging cable, and does not support video output.)
- 【Ultimate Durability】 Based on 36,000+ bends strict tests, with special zinc alloy design and wearing rugged nylon braided exterior, SooPii Charging cable serve you longer and stronger.
- 【Wide Compatibility】Works effortlessly with any USB-C device including phones, tablets, and laptops. Compatible with MacBook Pro 13'', MacBook Pro 15'', MacBook Air 2018, lPad Air 2020 10.9” (4th generation), lPad Pro 12.9''/11'', for Samsung Galaxy S21/ S21 Ultra/ S20/ S20+/ S20 Ultra/ Note 10/ Note 10 Plus/ , Google Pixel 2/3/3a/4 XL, Switch/Switch Lite and more. ( Note: Please use a 100W USB-C wall charger to achieve fast charging. )
- 【What you Get in Box】1 x SooPii S10CC PD Charging Cable and SooPii Worry-free 24-month Warranty
Can the cable be reflashed or hacked?
Potentially, for experiments—but the teardown establishes access as a challenge rather than a ready-made modification. The MCU has an SWD interface, and the report notes that reaching its pads after non-destructive disassembly of the connector could allow custom firmware and display experiments.
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There is an important boundary: the MCU is wired to measure voltage and current, not to communicate over the USB interface. Reflashing it therefore would not give it USB data access. The teardown does not document a complete firmware-dumping or flashing procedure, identify the stock firmware, or demonstrate a successful custom build, so those outcomes should not be assumed.
Rank #3
- 【Real-Time Power Monitoring】Plug in and instantly see EXACTLY how many watts your device is drawing. Is your "100W charger" actually delivering 100W? Our LED display adapts to your device: 20W–65W for phones, 65W–140W for laptops. And you'll see the wattage drop as your device nears full charge—that's the battery protection working, not a problem with the type c cable
- 【Fast Charging and Data Transfer】It can quick charge up to 50% about 30mins for Macbook. Our green 240W USB-C to USB-C cable features a 225-strand high-conductivity copper core designed to minimize power loss and heat generation, delivering up to 48V/5A via PD 3.1 technology. And stable 480Mbps data transfer(USB 2.0) which lets you transfer a 1GB file about 20 seconds
- 【High Quality Green Type C Cable】Conventional USB‑C connectors made from aluminum alloy are prone to surface scratches and oxidation after long-term daily use. Ours 240w usb-c charge cable uses zinc alloy —more durable, corrosion‑resistant, and feels premium in hand. Inside, tinned copper cores resist oxidation, long lasting, so your cable won't degrade like standard copper over time
- 【Active Safety Protection】 This 240W green USBC to USBC cable features a smart E-Marker 3.1 chip. It actively adjusts voltage and current in real-time, preventing over-current, overheating, and short circuits before they happen. It delivers stable full-speed charging protection and designed for iPhone 17/16/15, Apple, iPad, Macbook, laptops, tablets, Android and Type-C smartphones
- 【Heavy Duty Green USB-C Cable】Standard 24-strand braided cords often develop fraying after several months of daily use. Our 48‑strand twisted braided jacket is thicker, tougher, tangle-free, and passes over 40,000 bend tests – delivering far longer service life than conventional braided USB-C cables. Ultra-Durable from freezing winters to scorching summers. Upgrade your charging setup today
What this teardown does—and does not—tell you
- Established: the examined cable has an LCD, touch control, a PCB with regulators and a backlight MOSFET, and an EN32LF056 Cortex-M0+ MCU with 64 kB Flash and 4 kB SRAM, according to Hackaday’s report.
- Not established: a non-destructive opening method, a tested firmware replacement, USB data capability for the display MCU, or a comparison with other display-equipped cable models.
If you are evaluating another display cable, the useful questions are whether its screen reports live voltage and current or only displays animations, what power rating it claims, whether it supports data transfer, how serviceable the enclosure is, and whether debug pads are accessible. The UGREEN teardown supplies one example, not a product-to-product comparison.
Quick Recap
Best Value
- PD3.1 COMPATIBILITY & 480MBPS TRANSFER: Toocki 240W USB C to USB C Cable works with MacBook Pro/Air (M3/M2/M1/Intel), iPad Pro M4 (2024), iPhone 17/16 series, and Galaxy S26/Pixel 8 Pro for fast charging , transfers 1GB files in 30s, Backward compatible with 140W/100W/60W chargers
- 240W LAPTOP FAST CHARGING: Optimized for MacBook Pro 16" M1，can chargers it max to 56% in 30 mins (with an apple 240w usb-c charger) and powers Lenovo ThinkPad/Dell XPS via PD3.1, supports M3/M2 Pro/Max MacBooks and tested with 89W stable input on high-performance laptops
- REAL-TIME POWER DISPLAY & MULTI-PROTOCOL SUPPORT: This USB C charge cable shows live charging watts (±3% accuracy) to prevent slowdowns Compatible with PD3.1/QC/AFC protocols for Huawei MateBook/Xiaomi laptops and Samsung tablets
- CAR INTEGRATION & SMART POWER CONTROL: Enables CarPlay/HiCar/CarLife connectivity while charging Features E-Marker chip to auto-adjust power for iPads (30-45W) and protect iPhone 15/16/17 batteries
- MILITARY-GRADE DURABILITY & DUAL FUNCTION: Aerospace aluminum connectors + braided nylon shell survives 15,000 bends Simultaneously delivers 480Mbps data transfer for portable monitors/HDDs during charging
Rank #4
- Dual-Mode TFT Touch Screen: Elevate your charging experience beyond basic numerical cords. This usb c cable with display features an industry-first TFT touch screen with two intuitive UI themes. Simply tap the panel to switch seamlessly between a stabilized Digital Power Meter and a dedicated Fast Charge mode, eliminating chaotic and confusing data readouts.
- Sleep-Friendly Display Mode: Designed specifically for bedside and night-time charging. Unlike competitor cables that remain blindingly bright all night, our smart panel allows you to long-press for 7 seconds to turn off the main color screen. A soft ice-blue breathing light remains active, preventing light pollution while letting you easily locate the cord and confirm charging status in the dark.
- 240W PD 3.1 & Advanced Fireproof Safety: Powered by the PD 3.1 protocol for a maximum 48V/5A output. The built-in E-Marker chip intelligently matches power to prevent overheating, while the internal TPE layer is built with advanced fire-resistant and heat-shielding materials, providing absolute safety for your high-value electronics without any burning hazards.
- Strict Compatibility & Boundaries: Delivers rapid power to MacBook Pro 16", iPhone 17/16/15 Series, Galaxy S26/S25/S24 Ultra, Steam Deck, and ROG consoles. It supports 480Mbps data transmission for syncing files, but strictly does not support 4K video output or external monitor expansion.
- Pressure-Resistant Zinc & Nylon: Engineered for the rigors of heavy daily use. The rapid heat-dissipating Zinc Alloy shell prevents thermal throttling during 240W loads, while the ultra-dense braided nylon exterior has successfully passed strict 50,000 physical bending tests for long-lasting durability.
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