Question about SATA power connectors

Hi everyone, i see many R2 pictures with twa onboard SATA power connectors : one with 2 pin and one with 4 pin… but as you can see on the picture my R2 got 2 connectors with 2 pin!


is it normal ? how can i do for an 3.5" HDD ? i have to replace the connector ?

thank you for your replies.

Hi Karon,

Arm boards, not only this one but mainly all of them, are not designed for native use with 3.5 HDD’s. They fit only for 2.5 laptop HDD’s. There is a reason for it : 3.5 HDD’s need double power feeding : 12V and 5V. So, your snap describes well a 2.5 HDD power connector on the board. It fits for cables made for this purpose :,searchweb201602_4_10152_10065_10151_10344_10068_5722815_10342_10343_10340_10341_5722915_10698_10697_5722615_10696_10084_10083_10618_10305_10304_10307_10306_10302_5722715_5711215_10059_5723015_10184_10534_308_100031_10103_441_10624_10623_10622_5711315_5722515_10621_10620,searchweb201603_28,ppcSwitch_3&algo_expid=4ba737bc-e083-4f55-aa1d-b09c106fb6a8-15&algo_pvid=4ba737bc-e083-4f55-aa1d-b09c106fb6a8&priceBeautifyAB=0 . Therefore, a 3.5 HDD can be plugged with an USB kit like this one:,searchweb201602_4_10152_10065_10151_10344_10068_5722815_10342_10343_10340_10341_5722915_10698_10697_5722615_10696_10084_10083_10618_10305_10304_10307_10306_10302_5722715_5711215_10059_5723015_10184_10534_308_100031_10103_441_10624_10623_10622_5711315_5722515_10621_10620-5711315,searchweb201603_28,ppcSwitch_3&algo_expid=9c801748-201d-4722-a05e-cbe95bfc8399-2&algo_pvid=9c801748-201d-4722-a05e-cbe95bfc8399&priceBeautifyAB=0 . If you have a sufficient knowledge in electronics and are able to built things in some homemade case with internal SMPS , then you can built it around some power splitter cables like this :,searchweb201602_4_5722916_10152_10065_10151_10344_10068_5722816_10342_10343_10340_10341_10698_10697_10696_5722616_10084_10083_10618_10305_10304_10307_10306_10302_5722716_5711216_5723016_10059_10184_10534_308_100031_10103_441_10624_5722516_10623_10622_10621_10620_5711316,searchweb201603_28,ppcSwitch_3&algo_expid=4680e681-3186-4596-8603-a0796f2cef24-0&algo_pvid=4680e681-3186-4596-8603-a0796f2cef24&priceBeautifyAB=0. In such a case, you should manage the power-off procedure for your HDD through a supplementary button, co’s the board will not automatically shut your disk down when powering off !

Regards, Paul.

That’s right. The power connectors on the BPI R2 are only for 2.5" HDDs. My solution for this is an old PC power supply with bridged power-on pin

Here you can find some other idea on how to power 3.5" HDD with R2: BPI-R2 boot / power suppy.

There is 12 volt 2 pin on the picture.12 volt pin is empty.Can I to replace the connector?Do I use 3.5" sata HDD? I have 12 V 2 A power adapter for BPI-R2.Screenshot_20180419-104205