Usb connections are backwards compatible.
Usb 2 0 cable compatible with usb 3 0 port.
This is the standard rectangular female port found on computers and other devices.
Usb 3 0 cables are compatible with usb 2 0 devices but the performance of these connections is only as fast as it would be at 2 0 level.
A usb 3 0 port can only use usb 3 0 cables to be effective but usb 2 0 ports can use both usb 2 0 and usb 3 0 cables.
Each usb port will be labeled specifically as usb 1 0 usb 2 0 or usb 3 0 if the usb ports aren t labeled appropriately click on each port and make note of the value next to speed in the bottom pane.
If the notebook or pc manufacturer follows the official guidelines then the usb 3 0 interface ought to possess blue color inside the port whereas usb 2 0 has black or white within the.
You can also see that usb 2 0 micro a plugs fit in both usb 3 0 micro ab and usb 2 0 micro ab receptacles.
But the transfer rate will fall back to the speed of usb 2 0 so you won t get a high transfer speed.
The below usb compatibility chart was designed with physical compatibility in mind only.
Plugs connectors and ports oh my.
While not technically a usb 3 interface the usb c connector supports usb versions 3 1 and 3 2 and may connect to usb 3 interfaces with the right jack or cable.
In most cases this also means that devices will communicate properly albeit at the lowest common speed but it s no guarantee.
Usb 3 0 ports have 9 pins and have a transfer rate of 5 gbit s but 3 1 versions have 10 gbit s.
For example if you connect a usb 2 0 device to a usb 3 0 port the device will work as normal.
All versions of usb are intended to be backward compatible meaning that a usb 1 device should work on a usb 2 0 port and a usb 2 0 device should work on a usb 3 0 port.
A usb 2 0 can be used in a usb 3 0 port.
However the performance will fall back to 2 0 rather than 3 0.
If the speed is listed as 480 mbp sec then the usb port is capable of 2 0 speeds.
The same is true for your usb 3 0 port using a usb 2 0 cable.
Are 3 0 usb ports backward compatible.