Quick wins for a faster PC:
Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →iTechGuides is reader-supported. When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate I earn from qualifying purchases. Learn more
If the circle-shaped mark beside a USB-C port is the USB logo with a number such as 20 or 40, it identifies a USB4 performance tier: USB4 20Gbps or USB4 40Gbps. It describes data signaling speed—not charging wattage. An unnumbered circle, power symbol, or other mark may mean something else, so check the exact device model’s specifications if the icon is unclear.
What a numbered USB circle symbol means
USB-IF’s 2024 language guideline names USB4 20Gbps and USB4 40Gbps as distinct performance tiers. The number gives the tier’s signaling rate; it does not promise that every task will transfer data at that rate. Actual performance depends on the connected devices and the cable. USB-IF’s USB4 language guidelines describe those performance names.
USB4 uses the USB Type-C connector, but the connector’s shape alone does not tell you which speed or features a particular port supports. USB4 can carry data and display protocols over shared bandwidth, and what works depends on the capabilities supported by both connected devices. USB-IF’s USB4 overview explains the technology and compatibility.
Does the circle symbol tell you how fast it charges?
No. A USB4 speed marking is not a charging-wattage rating. Check the device specifications and any separate power marking for charging capability. USB-IF treats cable data rate and power capability as separately marked properties in its cable guidance.
#1 Best Overall
- Durable Design: Reinforced nylon exterior and a robust core ensure this cable withstands up to 5,000 bends, outlasting other brands
- Fast Charging: Supports Power Delivery for up to 60W high-speed charging when paired with a USB-C charger
- Versatile Compatibility: Works with virtually all USB-C devices, including phones, tablets, and laptops
- High-Speed Data Transfer: Transfer files quickly with 480Mbps data transfer speeds
- Included Accessories: Comes with a hook-and-loop cable tie for easy organization and a welcome guide for hassle-free setup
For example, USB-IF gives a USB 20Gbps USB-C-to-USB-C cable supporting 20V at 3A as a cable that may carry a combined 20Gbps/60W logo. That is an example of a specific cable rating, not a rule that every 20Gbps cable supports 60W.
What if the symbol has no number?
Do not identify every circle or semicircle beside a port as USB4. The meaning depends on the exact marking: a power glyph, battery mark, manufacturer-specific icon, or unnumbered symbol may indicate something else. With no photo or device model, the icon cannot be identified reliably from its shape alone.
Rank #2
- CONFIRM BEFORE BUYING — USB-C to USB-C ONLY: This iPhone 18 Charging cable connects two USB-C ports — it does NOT include a USB-A connector. Not a retractable coil cable. Not a magnetic self-winding cable. Features a tangle-free, ultra-flexible design for everyday 240W fast charging. If you experience any quality issues upon arrival, our customer support team is available 24/7 to assist with a prompt and professional solution
- High Power ≠ High Risk | Smarter Compatibility for Every Device: 240W doesn't mean compromising safety—it means unmatched versatility. Thanks to PD3.1 Extended Power Range (EPR) technology, our c to c cable fast charging dynamically adjusts voltage/current to deliver each device's maximum safe power (e.g., 60W to iPads, 100W to older MacBooks, 140W to MacBook Pro). Other 60W/100W usb c to usb c cable can't hit full charging speed for your power-hungry devices—they're held back by their own power limits. LISEN 240W usb-c charge cable? It charges all your gear steadily, efficiently, and at full speed, with zero safety risks
- 240W Ultra Fast Charging | Smart Protocol Matching: This iPhone 18 pro max charger fast charging cable supports PD3.1 EPR/QC4.0 fast charging up to 240W Max, working seamlessly with USB-C Power Delivery adapters (e.g.60W/100W/240W). It automatically matches your device’s handshake protocol to deliver the maximum safe power it can handle. It's 2.4X faster than 100W fast charging usb-c cables: Up to 85% charged in 30 mins for iPhone 18 Pro Max, up to 65% charged in 30 mins for iPad Pro, and up to 80% charged in 30 mins for MacBook Pro 16''(M5). This iPhone 18 charger cord balances speed and protection perfectly, giving you both fast and secure charging
- E-Marker 3.0 Chip | Real-Time Current/Voltage Monitoring: LISEN 240W type c charger fast charging cable has an E-Marker 3.0 + PD3.1 EPR system that actively monitors current/voltage 3.2M+ times per second, ensuring zero overloads, short circuits, or battery damage. Paired with dual safeguards (overheat + surge protection) and PD3.1/QC4.0 certifications, it's not just a USB-C to USB-C cable—it's a smart guardian for your devices
- Premium Copper Core | Conductivity Meets Durability: This high speed usb c cable fast charging is upgraded from standard copper to 99.99% oxygen-free copper cores—thicker, purer, and lower-resistance. This means: (1) Stable power delivery even at 240W (no energy loss or heat buildup). (2) Longer lifespan (resists corrosion and wear, unlike cheaper alloys). (3) Faster data sync (480Mbps) with minimal signal interference
Look up the exact make and model in the manufacturer’s manual or specifications. USB-IF’s logo and usage guidance covers certified USB-IF logos; its rules should not be assumed to define every informal marking a manufacturer places beside a port.
Recommended Free Tools
How to check whether a port will meet your needs
- Identify the port. Confirm the device’s make and model, then consult its manual or specifications for the port’s stated data rate and supported features.
- Check display support separately. If you plan to connect a monitor, verify that the device documentation lists the display capability you need; a USB4 label alone does not specify every display configuration.
- Check power separately. Find the port’s charging or power-delivery capability in the device specifications and compare it with the connected device’s needs.
- Check both endpoints and the cable. The connection operates at the best capability mutually supported by the host, peripheral, and cable. A faster cable cannot add features or speed that either device lacks.
When choosing a cable, match its stated data rate and power rating to your intended use, and confirm that both connected devices support the required capability. USB-IF’s cable guidance includes examples of how data and power ratings may be marked.
Rank #3
- The Anker Advantage: Join the 80 million+ powered by our leading technology.
- Rapid Charging: Supports high-speed charging up to 100W when used with a compatible charger.
- Highly Compatible: Designed to work flawlessly with any USB-C device. (Does not support video output.)
- Rugged and Durable: A hard-wearing nylon exterior combines with a 5,000-bend lifespan to create a cable that’s durable both inside and out.
- What You Get: 2-Pack Anker 333 USB-C to USB-C Cable (6ft Nylon), hook and loop cable tie, welcome guide, everlasting warranty, and friendly customer service.
How the 80Gbps figure fits in
USB-IF’s current USB4 overview describes operation up to 80Gbps over certified 80Gbps cables. That is an upper capability, not a promise that every USB4 port supports 80Gbps: USB4 20Gbps and USB4 40Gbps remain separately named tiers. USB-IF’s USB4 Specification v2.0 document-library entry is dated April 2, 2026.
Quick Recap
Best Value
- The Anker Advantage: Join the 50 million+ powered by our leading technology.
- Enhanced Durability: Improved construction techniques and materials make a cable that lasts 5× longer.
- Universal Compatibility: Designed to work flawlessly with any device that uses a USB-C port.
- Fast Sync & Charge: Supports fast charging up to 15W (3A/5V) and data transfer speeds up to 480Mbps. (Not compatible with Power Delivery).
- What You Get: 2 × Premium Nylon-Braided USB-A to USB-C Charger Cable (6ft), welcome guide, everlasting warranty, and our friendly customer service.
Rank #4
- 60W Turbo Fast Charging：This iPhone 18 charger cord support PD3.0/QC3.0/QC4.0 fast charging up to 60W Max (20V/3A) with USB-C Power Delivery adapters such as 30W/45W/60W. Which 2.2X faster than 3.1A version and charges USB C Phone from 0% to 80% within 35 minutes, iPad Pro 64% within 35 minutes, Macbook air 50% within 35 minutes, and data transfer speeds up to 480Mbps (1200 songs synced per minute) compatible with Samsung,Tablt,iPad Air Mini Pro,Macbook and More.
- Right for ALL Your Devices：This is the USB-C to USB-C cable Not the USB-C to USB-A cable, iPhone 18 Pro Max fast charger Compatible with virtually all USB-C devices including phones, tablets, and laptops. Such as Samsung Galaxy S25/S24/S23/S22/S21+/S21/S20/ S20+/ S20 Ultra/ Note 10, MacBook Air/Pro 13'', iPad Mini 6, iPad Pro 2021/2020/2018, iPad Air 2020, iPhone 18/ iPhone Duo/ 18 pro max/ iPhone 17/ iPhone Air/ 17 pro max/iPhone 16/ 16 Plus/ 16 pro max/iPhone 15 pro max plus. NOTE: Don't Compatible with iPhone 14/13/12/11/X. This product supports bulk purchasing, making it ideal for businesses and large orders.
- Green Recyclable Materials：The LISEN USB C to USB C iPhone 18 17 16 15 charger fast charging you rely on most are braided from 48 strands of recyclable cotton yarn material. This braiding design also helps to prevent tangling and damage from bending and twisting. Using recycled materials is one of the ways we can lower the carbon impact of our products, since these materials often have a lower carbon footprint than materials from primary sources.
- Triple Protection USB C Port：USB to USB C Cable has electronic safety certifications that comply with appropriate standards, it built-in laser welding technology, which ensure the metal part won't break. The copper core part is reinforced with UV glue to prevent the solder joints from falling off. The USB C port pass Load-bearing 13KG test which longer service life and will never break.
- What You Get：LISEN USB C to USB C Cable 5-Pack (3.3/3.3/6.6/6.6/10FT), 18-Month worry-free period and 24/7 customer service, if you have any questions, we will resolve your issue within 24 hours. Whether you're shopping for samsung or iphone 16 pro max charger cord accessories gifts for men/women or reliable car accessories, this super fast charger usb c to c cable is built to last
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
