Developed in the 1990s, USB has become the most successful computing interface yet.
The throughput has improved from 1.5Mbps to 10Gbps through standards evolution .
1998 USB 1.x Low Speed LS 1.5Mbps Full Speed FS 12Mbps
2000 USB 2.0 High Speed HS 480 Mbps FS/LS
2001 USB on the Go USB 2.0 OTG Master / Slave configurable
2008 USB 3.0 USB 3.1 Gen 1 Super Speed SS 5Gbps / HS/ FS / LS
2013 USB 3.1 Gen 2 Super Speed + SS+ 10Gbps SS/HS/FS/LS
2017 USB 3.2 Gen 2 Super Speed + SS+ 10Gbps and Gen2x2(Dual Lane) for 20-Gbps SS/HS/FS/LS
2014 USB Type C USB 10Gbps DP 8.1Gbps and Power 100 W
2019 USB4 requires USB-C connectors
USB TYPE C
USB Type C is a specification for a reversible plug connector for USB Devices and Cabling.
An important benefit of the USB Type C is that it supports USB4, USB 3.2, 3.1, USB 3.0, USB 2.0 and Thunderbolt Technology.
USB Type C ports can support a variety of different protocols using “AlternateModes”, which allows you to output Power, Data and Video Signals and use of adapters that can output HDMI, VGA, DisplayPort or other types of connections from that Single USB port.
This allows for future devices to streamline their design to offer multiple output solutions through one singular output.
USB Battery Charging - BC 1.2
USB Battery Charging technology ensures that one can safely charge mobile devices thru the particular USB Port with Battery Charging Feature support.
Previously a USB Portable Device with a battery and charging capability simply took power from a USB port without any control.
With “BC 1.2” introduced end 2010, a Portable Device can get more power and the battery can be charged faster. It is important to verify that a Portable Device complies with the BC 1.2 specifications while communicating with a Charging Downstream Port and identifying a Dedicated Charger, and ensuring that it continues to operate as a functional USB device.
What is Power Delivery
Some external devices like for instance a computer Mouse will also need some power from the USB Port to operate. The Default Power that USB 1.0 and 2.0 can deliver is 2.5Watt (5Volt, 0.5A) and USB 3.0 and 3.1 can deliver 4.5Watt (5V, 0.9A), USB3.2 can deliver 7.5W (5V/1.5A) and USB4 can deliver 100Watt .
For the more power hungry external devices different technologies were developed. It is important to distinguish 2 different ones; “USB Power Delivery” and “USB Battery Charging”
USB Power Delivery(PD): “Power Delivery” works equally well with USB2.0 3.x and 4 and it allows power draw up to 100 Watt from the source device. This power can be transferred at the same time the data is transmitted through the same cable. The intent is to permit uniformly charging for laptops, tablets, USB-powered disks and similarly higher power consumer electronics. Please note that an Active USB Type C Cable with E-Marker Chip, like the Club3D CAC-1522, is recommended when making use of Power Delivery up to 100 Watt, to ensure a safe connection.
USB PD “Power Delivery” is defined by different profiles – and it depends on the manufacturer which configuration would be used. 100Watts is delivered in scale as follows.
What is USB 3.1
“USB” stands for Universal Serial Bus and “3.1” is the recently released standard which indicates the technology and specifications it is compliant to.
USB Type C is not the same as USB 3.1 – USB Type C is just a connector shape and the underlying technology could just be USB 2.0 , 3.x.
Furthermore there are different USB Type-C 3.1 versions the “Gen1” and “Gen2”.
USB Type-C 3.1 Gen 1 means that the USB technology used is like USB3.0 (5Gbps)
USB Type-C 3.1 Gen 2 means that the technology used is USB 3.1 over 2-lanes(10Gbps)
To be able to send Video signals over USB 3.1 Type-C (Gen2) the source device
(PC/Laptop) will need to have displayport Alternate Mode Support
Although Thunderbolt 3 is also coming out with a USB Type C connector, it is not the same as USB 3.1 Type C Gen2.
USB Types and Naming
What is USB Graphic?
USB Graphic Technology allows you to connect almost any kind of display via a standard USB connector or cable. The technology is designed to be simple and easy to use: just install the software, plug in your device and within a few seconds you have got a new monitor, docking station or projector connected to your PC. There is simply no easier way to add a display to your PC or Mac. Club3D offers a wide range of products from universal USB docking Stations to USB Graphic adapters.
For Apple users: Apple display settings will hide the resolution, so please hold down the option button on the Apple display resolution interface and then click zoom position of the resolution interface to display the hidden resolution. Then check the real resolution.
USB Graphic offload all the heavy lifting of HD Video Playback and 3D Rendering to the GPU of your device. If your GPU performance is good you can even play games on a 4K Monitor.
USB Graphic provide support for HDCP which means that you will not get a blank screen when trying to watch the latest HD Movie.
Discover True Detail
4K also known as Ultra High Definition (UHD) delivers four times as much details as 1080p Full HD, that is eight million pixels compared to two million pixels, bringing more image clarity, fine detail and greater texture.
Now you can embrace these technologies with just a free USB Port.
The NEW Generation of USB4™ Technology is providing faster data performance, a better charging experience, the convenience ofinteroperability and certified reliability.
Key characteristics of the USB4™ solution include two-lane operation and up to 40Gbps operation over 40Gbps-certified cables. Multiple data and display protocols efficiently share the total available bandwidth over the bus. The USB4™ architecture defines a method to share a single high-speed link with multiple end device types dynamically that best serves the transfer of data by type and application.
40GB/s Data Bandwidth | Thunderbolt 3 Compatible | Dynamic Bandwidth Sharing | 100W Power Delivery
• Bandwidth up to 40GBps
• Power Delivery up to 100W
• E-mark IC
• Support more protocols, DisplaPort™ and PCI express
• Type-C cable ONLY
• Backwards compatible with USB3.2, USB2.0 and Thunderbolt™ 3
(the resulting connection scales to the best mutual capability of the devices being connected.)
• USB-IF Certified
USB4 Transfer Speed
Difference Between Bandwidth and Speed
You might come across bandwidth and data transfer rate being used synonymously. While they are related, they refer to two very different measurements. Here an explanation understanding the differences.
The key difference between bandwidth and speed is that the bandwidth is the capacity available for use in data transmission while the speed is the data transferring rate.
Bandwidth is the maximum potential data that can be transferred within a given time. The bandwidth is shared among all users of the bandwidth.
Data Transfer Rate
The data transfer rate is the actual amount of data that is passed from one location to another over a given period of time.
The most common example is a Link Aggregation where a number of Ethernet connection are bonded into a single interface. The bandwidth is the sum of the total connections but the speed is determined by the physical network connection.
Summary - Bandwidth vs Speed
Bandwidth and speed are common terms in fields such as Networking, Electronics, Telecommunication etc. The difference between bandwidth and speed is that bandwidth is the capacity available for use in data transmission while speed is the data transferring rate.