What Is USB 3.2?

The new USB 3.2 tech aims to double that to 20Gbps, or 2GB/sec, by allowing for 10 Gbps per lane. The devices you’re using will have to support the newest USB hardware and come with the modern USB-C connectors. USB-C has long been touted as the universal standard that will save us all, a

single port that can charge your phone, your laptop, your tablet, your Bluetooth speaker, and even your Nintendo console, all through a single common port.
Given that USB 3.2 isn’t expected to be finalized until later this year, it’ll probably still be a while before we see the new standard roll out to devices, and there’s even more news planned for the USB Developer Days event in September 2017.

Data transfer:

The Super Speed transaction is initiated by the host making a request followed by a response from the device. The device either accepts the request or rejects it; if accepted, the device sends data or accepts data from the host.

USB 3.2 Power:

As with earlier versions of USB, USB 3.0 provides power at 5 volts nominal. The available current for low-power Super Speed devices is 150 mA, an increase from the 100 mA defined in USB 2.0. For high-power Super Speed devices, the limit is six unit loads or 900 mA, almost twice USB 2.0’s 500 mA.

Speed in USB 3.2:

A factor affecting the speed of USB storage devices is that the USB Mass Storage Bulk-Only Transfer protocol drivers are generally slower than the USB Attached SCSI protocol drivers.

On some old (2009–2010) Ibex Peak-based motherboards, the built-in USB 3.0 chipsets are connected by default via a 2.5 GT/s PCI Express lane of the PCH, which then did not provide full PCI Express 2.0 speed (5 GT/s), so it did not provide enough bandwidth even for a single USB 3.0 port.

USB 3.2:

USB 3.2 Gen 2×1 Super Speed+, 10 Gbit/s (1250 MB/s) data rate over 1 lane using 128b/132b encoding, the same as USB 3.1 Gen 2.

USB 3.2 Gen 2×2 Super Speed+, new 20 Gbit/s (2500 MB/s) data rate over 2 lanes using 128b/132b encoding.

67 thoughts on “What Is USB 3.2?

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