Power specification of internal SATA power connector?

[SMcCr1]

I understand that the Thunderbolt 3 ports on the Hades Canyon NUC's support only 5V 3A of power output – the "up to 100W of power" commonly quoted with TB3 is an optional feature not included on these NUC's (see recent thread /thread/125719 here).

It's https://en.wikipedia.org/wiki/Serial_ATA# Power_connectors commonly quoted that SATA power connectors can output 1.5A on each of the non-ground terminals (of which there are 9 – 3x3.3V, 3x5V and 3x12V). What are the power specifications of the internal SATA power connector?

I'd like to be able to use the SATA power connector to power a 12V 1.5A monitor, and according to the above Wikipedia entry, I'd just have to wire the 12V and ground up to a DC barrel and I'm good to go.

[n_scott_pearson]

Feel free to experiment with your NUC all you want. You will be voiding your warranty as you do so, however.

...S

[SMcCr1]

I'm not experimenting, I'd just like to make use of the provided SATA power connector and would like to know it's specifications.

Are you able to provide any specifications?

[n_scott_pearson]

Unfortunately, the Auxiliary SATA Power Connector is not detailed in the TPS. I have asked for additional information.

In other NUC models, the SATA Power Connector provides only enough power to drive a typical 2.5" drive (which are rated at 4.43W continuous). Unfortunately, while the pinout describes 1.5A total being available across the 5V pins, it does not mention what's available on the 3.3V pin. Suffice it to say, if this Auxiliary SATA Power Connector is true to past implementations, there will only be enough power available to drive a 2.5" drive. We'll see once they respond to my query.

...S

[idata]

Hello kombob,

Thank you for joining the Intel Community Support.I would like to add that I have forwarded your request regarding the power specifications of the internal SATA power connector to the appropriate department. As Scott Pearson said, it is not available on the Technical Product Specifications. We will keep you updated as soon as we have additional details about this.Wanner G.

[Ronny_G_Intel]

Hi kombob,

I work for Intel Customer Support and I have been looking into this forum and also on this one: How to control output voltage of Thunderbolt 3 ports in NUC8i7HVK? Unfortunately what you are trying to do (at least on this forum: use the SATA power connector to power a 12V 1.5A monitor) is not Intel supported or validated and on the other hand, the SATA internal connector specification is not publicly available (perhaps Scott can source it and make it available for you).

I would like to help you with this request but it is completely out of our scope of support so peer-to-peer help is my only recommendation at this point.

I hope that you understand

Regards,

Ronny G

[n_scott_pearson]

Darn! I wish I had read this earlier. I was actually at the Hawthorne Farms campus this afternoon visiting with the NUC development and validation teams and I could have asked for an update on this issue. I know that the engineers asked for this information to be added to the TPS, but I do not know whether/when this will happen. I will send them an email and ask for the update...

...S

[aflexio]

Hi @n_scott_pearson,

Do you already have some update on the power specifications of the internal SATA power connector? I am also highly interested in the detailed SATA power connector specifications of the NUC8i3BEB. Until today, there was no update performed in the manual regarding the on-board SATA power connector. As it seems to me the information is given in the manual of newer NUCs, but is not available for older ones still.

I appreciate any feedback as well as any hint where to find this information.

Best Regards

[n_scott_pearson]

I am not sure that you are talking about; this is definitely documented and I believe it has been since at least 2019. The pinout for the SATA Power connector is provided in Table 15 of Section 2.2.4.1 (page 33) of the BE NUCs' Technical Product Specification (TPS). You can download this document from here: https://www.intel.com/content/www/us/en/support/articles/000005545/intel-nuc.html.

...S

[aflexio]

For sure, the pinout is documented in general. What I am asking for is the current (A) supplied by each pin. This is definitely missing in the documentation.

Many thanks in advance.