USB 3.2 Specification Published and Announced

by Hilbert Hagedoorn on: 09/27/2017 07:11 PM | source: | 28 comment(s)

A while ago there was already word out on the street that the USB Focus group would be announcing a new draft for upcoming USB 3.2, that has now been finalized and published. To keep things really simple, we're doubling thing up once again.

Where USB 3.0 aka 3.1 Gen1 was capable of 5 Gbps connectivity, USB 3.1 Gen2 did 10 Gbps. USB 3.2 will double that up-towards 20 Gbps. Divide it by 8 bits and that would be 2500 MB/sec from which you need to deduct encoding and errors. There is a distinction though as it is based up-on two-lane operation as tweakers.net spotted today.

Key characteristics of the USB 3.2 solution include:

Two-lane operation using existing USB Type-C cables
Continued use of existing SuperSpeed USB physical layer data rates and encoding techniques
Minor update to hub specification to address increased performance and assure seamless transitions between single and two-lane operation

So basically using two 10 Gbit/s lanes you get towards a throughput of 20 Gbps. Obviously you will need a host and client connection that is compatible with the new standard. Current USB type C cabled would be compatible if they have been certified for 10 Gbps SuperSpeed USB. If you like to do some reading, there is a 548 page document available on the new 3.2 Spec, download here.


USB version	Speed	Encoding	Connectors
USB 2.0 (incl usb 1.0 and 1.1)	up to 480 Mbps	8 / 10bit	Type a, b (mini, micro), c
USB 3.1 Gen 1 (SuperSpeed Usb)	up to 5 Gbps	8 / 10bit	Type a, b (mini, micro), c
USB 3.1 Gen 2 (SuperSpeed usb Gbps)	up to 10 Gbps	128 / 130bit	Type a, b (micro), c
USB 3.2 (SuperSpeed usb 20 Gbps)	up to 2 lanes 5 Gbps up to 2 lanes 10 Gbps	128 / 130bit	Type a, b (micro), c

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Emille
Senior Member

Posts: 785
Joined: 2014-09-22

#5476322 Posted on: 09/27/2017 07:59 PM

this is what technology dose, it moves forward, stop nagging and and be thankful for backward compatibility.

How is having not implemented new specs moving forward....

Motherboards still have pointless 2.0 slots, usb 3.0 only, a few gen 1 3.1 slots and a single type c connector.

That would be like calling the current existence of 16k displays 'moving forward' when no one even has access to them, let alone could afford them.

It will move forward when the legacy garbage doesn't comprise 80% of all usb slots on a motherboard.

fry178
Senior Member

Posts: 1947
Joined: 2012-04-30

#5476324 Posted on: 09/27/2017 08:01 PM

@yeeeman
Lol. Cause they forced you at gun point to buy it, right?

Usb 3.0 is enough for most, including me even with a ssd as external backup.

Raider0001
Senior Member

Posts: 514
Joined: 2006-11-25

#5476326 Posted on: 09/27/2017 08:05 PM

USB 3.2 ? Intel is like: Z470 Chipset coming UP!

DLD
Senior Member

Posts: 887
Joined: 2002-09-14

#5476331 Posted on: 09/27/2017 08:32 PM

Think I'll wait for 3.3.10059. That revision will be found on the Intel chipset Z470.9 based mobos... Though I can BARELY wait, that's how impressed I am with the advancement of USB specs....

RzrTrek
Senior Member

Posts: 2549
Joined: 2012-04-16

#5476334 Posted on: 09/27/2017 08:34 PM

I've got a USB3.1 and USB-C connection, none of which is being used and I honestly don't see any reason to jump on the USB-C hype train.

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