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I've been searching around the web and am not able to find any female connector for the micro-A USB other than the micro-AB. On Wikipedia the receptacle list doesn't show a micro-A female.
Was the male micro-A plug only able to fit into the AB port?
QMord
Posted 2015-06-15T07:00:56.437
Reputation: 666
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No, there is no such thing as a micro-A receptacle. There is only a micro-AB receptacle. The Micro-USB Cables and Connectors Specification is available in the USB 2.0 specification zip file, and says:
The Micro-USB specification defines the following additional connectors:
- Micro-B plug and receptacle
- Micro-AB receptacle
- Micro-A plug.
No micro-A receptacle.
Was the male micro-A plug only able to fit into the AB port?
Yes. This is shown in Table 4-1. "Plugs Accepted By Receptacles":
endolith
Posted 2015-06-15T07:00:56.437
Reputation: 6 626
1Thanks, I appreciate the answer. I know it's been a while since I asked lol – QMord – 2016-10-19T15:38:34.387
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It looks to me like micro A is necessarily included in micro AB, but nothing else, as, correct me if I'm wrong but the following quote seems to suggest A is responsible for power and not much else.
"The OTG device with the A-plug inserted is called the A-device and is responsible for powering the USB interface when required and by default assumes the role of host. The OTG device with the B-plug inserted is called the B-device and by default assumes the role of peripheral. An OTG device with no plug inserted defaults to acting as a B-device. If an application on the B-device requires the role of host, then the Host Negotiation Protocol (HNP) is used to temporarily transfer the host role to the B-device."
Alpheus
Posted 2015-06-15T07:00:56.437
Reputation: 31
1Indeed, it’s all related to USB OTG. Though almost no device manufacturer actually cares and most OTG-capable devices have Micro-B jacks. A Micro-A jack will always be compatible with Micro-B plugs, hence the name AB. – Daniel B – 2015-06-16T07:00:30.637
If there is a male Micro-A USB connector then there has to be a female plug, thats just how it works, cables might just not exist though. But they do
– Ramhound – 2015-06-15T11:05:29.987The female version that I usually see with the micro-A USB male is the micro-AB receptacle. I can't find just the micro-A female though. – QMord – 2015-06-15T17:34:40.113
What difference does it make if the AB receptacle works? – Ramhound – 2015-06-15T18:24:19.157
I'd like to know if the USB-IF ever included a micro-A receptacle in their specifications, and if not, why? – QMord – 2015-06-15T18:50:15.940