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What is Quick-Sense USB-C PD Charging and how does it work?

JAR Systems' Quick-Sense USB-C PD charging technology has redefined device charging by combining USB-C PD with proprietary dynamic per-port power allocation to optimize power delivery, while eliminating the need for power strips or AC adapters.

What is USB-C?

USB Type-C, or USB-C, is a standard connector and port type designed for modern devices. It features a slim, reversible design and can support scalable power delivery and high-speed data transfer, depending on the USB version and device capabilities.

What is USB PD?

USB PD (Power Delivery) is a specification for delivering higher levels of power, most commonly over USB-C. Not all USB-C ports or cables support PD—some are data-only, some handle both data and charging, and others are limited to charging. For those that do support PD, the system works by negotiating the amount of power to be shared between the power supply and the receiving device. In this “handshake,” each side communicates its maximum power allowance to ensure optimal charging. In its latest revision (3.1), USB PD supports up to 240W, making a single USB-C port versatile enough to safely power a wide range of devices with varying power and data needs. Devices advertised as supporting fast charging typically rely on USB PD to deliver higher power safely and efficiently.

What is Quick-Sense USB-C PD?

Quick-Sense USB-C PD charging technology, first developed by JAR Systems in 2018, enables efficient multi-device charging by enhancing USB-C PD with dynamic per-port power management. The system detects and distributes power to each connected device based on the negotiated power profile established via USB-C PD. As charging progresses, these profiles are continuously updated, and the hub dynamically reallocates available power across its ports to ensure each device receives its negotiated charge without exceeding the system’s maximum output. If the combined demand of connected devices would surpass that limit, the hub automatically withholds power from some ports until sufficient capacity is available. As devices finish charging or their negotiated power decreases, the hub redirects freed-up power to other devices, allowing them to begin or accelerate charging.

How this power management is applied across our portfolio of Quick-Sense USB-C PD Charging Hubs depends on their size. For example, low-capacity hubs will typically charge all connected devices at once, as their combined power draw should stay within the hub’s maximum output. By comparison, higher-capacity hubs are more likely to use this dynamic per-port power management to intelligently allocate power to more devices—protecting circuits and ensuring safe, reliable charging.

Why choose products featuring Quick-Sense USB-C PD Charging Technology?

Quick-Sense USB-C PD charging technology powers a wide range of JAR Systems solutions. It's available as standalone charging hubs, upgrade kits for legacy products, retrofit kits for third-party products, and fully integrated into our charging carts and stations. Each solution offers unique benefits for different use cases, but all share two key advantages: The ability to charge devices without AC adapters and the convenience of arriving pre-wired with tension-relief USB-C cables. This eliminates the time-consuming process of wiring multiple adapters into cable management systems, which is generally required by charging solutions that rely on power strips.

Beyond simplifying installation, Quick-Sense USB-C PD charging technology is far more energy-efficient than using individual AC adapters, power strips, or timer-based systems. Higher-capacity Quick-Sense USB-C PD Charging Hubs allow more devices to be powered from a single standard outlet than would normally be possible without advanced power distribution. By negotiating and dynamically allocating power delivery in real time, Quick-Sense USB-C PD provides optimal power to each device, ensuring faster, safer, and more balanced charging for all connected devices.

Designed to accommodate a wide range of devices, total per-port wattage also varies across our portfolio of Quick-Sense USB-C PD Charging Hubs. Some hubs deliver higher wattage (65W/Port) to accommodate devices with greater power demands, such as laptops, while others provide lower wattage (30W/Port) to more efficiently charge devices with lower power requirements, like Chromebooks, tablets, smartphones, or power banks. This helps optimize both performance and cost based on intended use.

For organizations with existing charging solutions that may be less efficient or time-consuming to maintain, solutions with Quick-Sense USB-C PD charging technology provides a practical, cost-effective alternative. In particular, self-contained hubs can be seamlessly integrated into current systems or used as standalone units, providing flexibility across a variety of applications. Maintenance is also simplified, as entire hubs can be easily removed and replaced without disrupting the rest of the setup.