Upgrade Your Tech: How to Pick the Best USB Cable for Your Needs

You probably have a drawer full of cables at home tangled, labeled in different ways, and frustratingly inconsistent. Some charge your phone quickly, others slowly. Some of them transfer files in seconds, while others don’t seem to do anything. The distinction is usually between the two: the USB cable.

There are a plethora of different kinds of USB cables available in the market these days, such as USB-A, USB-C, USB 3.2, USB4, and Thunderbolt; selecting the right one for you may seem like a daunting task. In this guide, we will help you make a smart and informed decision without the confusion.

Let’s review the different types of USB Cables.

However, to know what to look for, it’s important to know the two primary types of USB connectors you’ll come across:

USB-A

The tried and tested rectangular connector used for decades. While most are now USB-C, older laptops, wall chargers, desktop computers and car chargers typically have USB-A ports. Older devices or accessories are connected with cables that have a USB-A connector on one end.

USB-C

This small, oval shaped interchangeable connector that is now the standard of the modern age. Nowadays, you often find USB-C on smartphones, tablets, laptops, headphones and accessories. It can deliver faster charging speeds and higher data transfer rates than USB-A can, however, not every cable can support USB-C  this is the problem that most people run into.

Micro-USB

An older standard that is still in use on some low-end Android devices, wireless headphones and accessories. While Micro USB is being superseded by USB-C, these cables might still be useful if you’re not able to upgrade your older devices.

USB Versions and What They Actually Mean

The type of connector indicates the physical shape and the version of the USB indicates the amount of data that can be transferred and the amount of power that can be pushed through the cable. The following is a quick explanation:

• USB 2.0: Up to 480 Mbps data transfer. Good for charging and low bandwidth devices such as keyboards and mice.
• USB 3.2 Gen 1: Also called USB 3.0, delivers up to 5 Gbps. For external hard drive and flash drive.
• USB 3.2 Gen 2: Reaches 10 Gbps. A good option for anyone who is transporting a lot of data on a frequent basis.
• USB 4: These are the latest and are capable of up to 40 Gbps and up to 80 Gbps in newer implementations. Perfect for high-end applications, such as video editing or high-resolution displays.
• Thunderbolt 4: Intel’s Thunderbolt is based on the USB-C port but can deliver up to 40 Gbps and has other capabilities such as daisy chaining multiple devices and dual 4K display output.

Please note: USB-C cable is not the fastest, it is what it can be. Even the USB-C cable that runs according to the USB 2.0 protocol will only reach 480 Mbps. Don’t only consider the type of connector; always look for the USB version.

Power Delivery – What is it and what do you need to know?

Charging speed is one of the things that most people don’t understand about USB cables. Not every cable is compatible with fast charging and only using the right cable will help you to charge at the speed it is capable of.

USB Power Delivery (USB PD)

All of the USB-C cables share a common standard for delivering more watts  18W for fast charging of phones, up to 240W for high-performance laptops  called USB Power Delivery. Plug in a USB PD cable and your device and charger coordinate in milliseconds to determine the proper voltage and amperage needed to charge safely and quickly.

E-Marker Chips

Cables with ratings higher than 60W must have an embedded chip called an e-marker. This chip communicates with the charger and device to determine the maximum safe power levels of the cable. Otherwise, there is a 60W limit, regardless of the packaging. Please note that for charging laptop devices at 100W or more, you will see a mention of e-marker chip support, so please be sure to choose one that supports it.

Wattage Guide by Device Type

• Smartphones: 18W to 65W
• Tablets: 30W to 65W
• Lightweight laptops: 45W to 65W
• High performance Laptop and Gaming rigs: 100W to 240W

Understanding the difference between good and bad cables in terms of quality and durability.

Most of the time, the failure of the cable is at the connector ends where the cable connects to the plug. This is where the most physical stress is experienced from bending, pulling and plugging and unplugging. See below to get an idea of the quality of build you are looking at:

• Braided outer jacket: Nylon or aramid fiber braiding provides much more durability and resistance to fraying than does a simple rubber or PVC coating.

• Strain relief: The reinforced area where cable connects to connector. Thick, flexible strain relief prevents the breakage of internal wires while being bent over and over.

• Connector housing: Aluminum alloy connectors are more durable than plastic connectors and offer greater protection from interference.

• Bend rating: Quality cables are cycled for thousands of bends. Check specifications to see if cables have bend-test ratings.

Choosing the Right Cable Length

The length of the cable will have an impact on both convenience and performance, and it will affect you differently when you’re charging or transferring data.

When charging, longer cables cause voltage drop – a gradual loss of power along the length of the cable. With the 100W loads, around 4 to 5 percent of the power may be lost over a 3 meter (10-foot) cable, which is acceptable but may be a consideration for high-power devices.

In the case of data transfer speeds, it is the length that is more important. Passive copper USB cables running at 40 Gbps (USB4 speeds) max out at around 0.8 meters (2.6 feet). If you require more than that, you would need to use an active cable that has signal amplification built into the device and will cost more.

In general, 3-foot cables are used for desks, bedside charging, cables for around-the-home or office use, and active cables are used for long-distance high-speed data connections.

Why USB-IF Matters: Certification.

Buying a USB cable depends on a number of important factors, but one of the most important and most neglected is whether it is USB-IF certified. The USB Implementers Forum (USB-IF) is the standards organization which establishes the USB specifications. Cables with the USB-IF certification trident are tested and verified to meet the official performance and safety standards.

Why does it matter? Charging port failures are caused by the following, one of the major causes is uncertified cables. They can also misregulate power negotiation, sending the incorrect voltage to the device that can damage the device’s charging circuit over the long term, or even lead to overheating in worst case scenarios.

The cost of the certified cable choice and an uncertified cable choice is typically just a couple of bucks different. You might be able to avoid a costlier repair on your device with this little investment.

How to Choose the Best USB Cable for Your Needs

A simple decision framework based on typical use cases –

For Everyday Phone and Tablet Charging

Most smartphones and tablets only need a USB-C to USB-C cable with USB Power Delivery support ranging up to 60W. Focus on build quality and USB-IF certification, not on premium branding.

For Laptop Charging

Search for a USB-C cable that is capable of a minimum of 100W Power Delivery and has e-marker chip. Look at the maximum wattage input on the laptop and purchase a cable of similar wattage. A 140W or 240W cable provides for expansion in high-performance laptops.

For Fast File Transfers

Make sure that the cable explicitly states support for USB 3.2 Gen 2 (10Gbps) or USB4 (40Gbps). If your distance is over 0.8 meter at max speed, then you should get an ACTIVE cable. Check the compatibility of the USB version of your cable and your devices.

To output and display connection

A cable that is DisplayPort Alt Mode or Thunderbolt compatible is required. Not every USB-C cable will have video signals (the cable needs to be rated for this particular use). Thunderbolt cables can deliver up to 2x 4K resolution and are capable of transmitting data within 2 meters without degradation.

Final Thoughts

The key to finding the right USB cable is to make sure they meet your requirements. Whether a cable does the job or whether it just looks like it does the job depends on the type of connector, the version, the power delivery rating, the build quality, the cable length and the certification.

Don’t be tempted by ultra low prices on unbranded cables. The cost savings is not usually justified by slow charging rates, transfer failures, or damaged charging ports. One of the simplest, most effective upgrades you can do to your every day tech setup is a well made, certified USB cable.

You can charge a phone, power a laptop, use an external SSD or plug into a 4K display; there is a right cable for each of these. So now you know where to look.