The standard has been all but replaced by newer standards likeUSB 2.0,USB 3.0, andUSB4.

USB 1.0 was released in January 1996, but issues in that release prevented widespread support for USB.

These problems were corrected in USB 1.1 and are the standard that most pre-USB-2.0 devices support.

Photo of a USB 1.1 Type A to Type B Cable

USB 1.1 Cable (Type A to Type B).Mediabridge

USB 1.1 Connectors

Plugis the name given to a USB 1.1maleconnector, andreceptacleis what thefemaleconnector is called.

See ourUSB Physical Compatibility Chartfor a one-page reference for what-fits-with-what.

In other words, USB 3.0 devices areallowedto be backward compatible with USB 1.1 but are notrequiredto be so.

USB 1.1 (as well as 1.0 and 2.0) uses a “speak-when-spoken-to” protocol.

This means each machine communicates with the host upon the host’s request.

This is different from the equipment starting communication from itself, which is supported in USB 3.0.