USB Connector
SuperSpeed Standard-A
SuperSpeed Standard-A is the nine-contact USB-A plug and receptacle form introduced for USB 3.x while retaining the familiar rectangular Standard-A mating interface.
Related: USB-A · SuperSpeed Standard-B · SuperSpeed Micro-B
Characteristics
Review SuperSpeed Standard-A's nine-contact design, USB 2.0 interoperability, USB 3.x role, common hardware, identification cues, and current legacy status.
| Specification name | USB 3.x Standard-A plug and receptacle |
|---|---|
| Connector family | USB-A / Standard-A |
| Reversible | No |
| Contact count | 9 |
| USB 2.0 interoperability | Yes; the SuperSpeed Standard-A mating interface was designed to interoperate physically with USB 2.0 Standard-A |
| USB 3.x support | Yes |
| USB4 support | No; USB4 uses USB Type-C |
| Typical role | Host-facing or downstream-facing connection |
| Typical devices | Computers, hubs, docks, storage equipment, test hardware, and legacy USB 3.x devices |
| Identification | Often uses blue plastic for visual identification, although color alone is not a reliable specification guarantee |
| Current status | Legacy but still widely encountered on USB 3.x hardware |
SuperSpeed Standard-A articles
Browse guides about SuperSpeed USB-A ports, USB 3.x compatibility, expansion cards, storage, adapters, and common performance questions.
