# USB Pin Header pinout? **URL:** \ **Category:** balenaFin\ **Created:** [June 20, 2019, 8:06pm UTC](https://forums.balena.io/t/usb-pin-header-pinout/16779 "2019-06-20T20:06:35Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![alinnz](https://avatars.discourse-cdn.com/v4/letter/a/e9bcb4/32.png) [@alinnz](https://forums.balena.io/u/alinnz)\ **Post date:** [June 20, 2019, 8:06pm UTC](https://forums.balena.io/t/usb-pin-header-pinout/16779/1 "2019-06-20T20:06:35Z")
Hi can someone point me in the right direction or tell me what the correct pinouts are for the USB pin header Please ---
**Author:** ![pdcastro](https://sea2.discourse-cdn.com/balena/user_avatar/forums.balena.io/pdcastro/32/1264_2.png) [@pdcastro](https://forums.balena.io/u/pdcastro)\ **Post date:** [June 20, 2019, 8:26pm UTC](https://forums.balena.io/t/usb-pin-header-pinout/16779/4 "2019-06-20T20:26:46Z")
I don’t have a Fin with me, but I’ve found the following in the [datasheet](https://github.com/balena-io/balena-fin/raw/master/documentation/PDF/balenaFin/v1.1/datasheet/datasheet.pdf), section 3, item 35: > 35, USB 2.0 4-pin header, Exposes a USB 2.0 port via male headers. **pin1 is marked in silkscreen with a triangle** Does this information go in the right direction? (Is there a triangle on the board?) (Once you know pin 1, I think [the rest follows](https://www.electroschematics.com/4856/usb-how-things-work/).) ---
**Author:** ![alinnz](https://avatars.discourse-cdn.com/v4/letter/a/e9bcb4/32.png) [@alinnz](https://forums.balena.io/u/alinnz)\ **Post date:** [June 20, 2019, 8:30pm UTC](https://forums.balena.io/t/usb-pin-header-pinout/16779/5 "2019-06-20T20:30:30Z")
Hi I found that too but no Triangle? also I need to know all pins Thanks ---
**Author:** ![ntzovanis](https://sea2.discourse-cdn.com/balena/user_avatar/forums.balena.io/ntzovanis/32/1150_2.png) [@ntzovanis](https://forums.balena.io/u/ntzovanis)\ **Post date:** [June 20, 2019, 9:25pm UTC](https://forums.balena.io/t/usb-pin-header-pinout/16779/9 "2019-06-20T21:25:13Z")
Hi @alinnz you are correct that the pin 1 is not properly marked as the datasheet suggests, I will make sure it is updated. Regarding your question, pin 1 is the one closest to the coprocessor and the pinout follows the standard USB pinout, which is as follow: 1 -\> Vcc 2 -\> D- 3 -\> D+ 4 -\> GND Cheers, Nico ---
**Author:** ![alinnz](https://avatars.discourse-cdn.com/v4/letter/a/e9bcb4/32.png) [@alinnz](https://forums.balena.io/u/alinnz)\ **Post date:** [June 20, 2019, 9:26pm UTC](https://forums.balena.io/t/usb-pin-header-pinout/16779/11 "2019-06-20T21:26:44Z")
Thanks Nico ---
**Author:** ![asawizard](https://avatars.discourse-cdn.com/v4/letter/a/f475e1/32.png) [@asawizard](https://forums.balena.io/u/asawizard)\ **Post date:** [September 8, 2020, 11:31pm UTC](https://forums.balena.io/t/usb-pin-header-pinout/16779/14 "2020-09-08T23:31:44Z")
Nico, I am looking for the specs on this USB pin out. I would like know if it is a third USB port? Could I connect a cable and connector to it if? so is it in the /dev list? Paul ---
**Author:** ![ntzovanis](https://sea2.discourse-cdn.com/balena/user_avatar/forums.balena.io/ntzovanis/32/1150_2.png) [@ntzovanis](https://forums.balena.io/u/ntzovanis)\ **Post date:** [September 9, 2020, 5:57pm UTC](https://forums.balena.io/t/usb-pin-header-pinout/16779/15 "2020-09-09T17:57:54Z")
Hello @asawizard , Correct that’s another USB port just like the other USB type-A ports. It’s actually a fourth USB port, there’re two type-A ports, the USB header and the USB interface on the mPCIe connector. Cheers, Nico ---
**Author:** ![tacLog](https://avatars.discourse-cdn.com/v4/letter/t/ecae2f/32.png) [@tacLog](https://forums.balena.io/u/tacLog)\ **Post date:** [September 9, 2020, 9:07pm UTC](https://forums.balena.io/t/usb-pin-header-pinout/16779/17 "2020-09-09T21:07:44Z")
@asawizard We use something like [this](https://www.amazon.com/TRIPP-Motherboard-Header-6-Inch-U024-06N-IDC/dp/B00QVTVB84/ref=sr_1_4?dchild=1&keywords=usb+header+to+usb+port+2&qid=1599685528&sr=8-4) to connect a 3rd wifi adapter to it on some deployed devices. Hope that helps! -Thomas ---
**Author:** ![semireg](https://avatars.discourse-cdn.com/v4/letter/s/f6c823/32.png) [@semireg](https://forums.balena.io/u/semireg)\ **Post date:** [April 8, 2021, 8:19pm UTC](https://forums.balena.io/t/usb-pin-header-pinout/16779/19 "2021-04-08T20:19:41Z")
Nico, I have a mPCIe USB device plugged into the fin 1.1.1 but I’m not getting any power. Is there a GPIO command to power cycle the mPCIe port? ---
**Author:** ![anujdeshpande](https://sea2.discourse-cdn.com/balena/user_avatar/forums.balena.io/anujdeshpande/32/3155_2.png) [@anujdeshpande](https://forums.balena.io/u/anujdeshpande)\ **Post date:** [April 9, 2021, 6:24am UTC](https://forums.balena.io/t/usb-pin-header-pinout/16779/20 "2021-04-09T06:24:04Z")
@semireg Let’s continue this on the other thread that you have replied to instead of this - [balenaFin Crucial M500 120GB mSATA SSD](https://forums.balena.io/t/balenafin-crucial-m500-120gb-msata-ssd/154773)