Question When installing either SATA or SAS hard drive into BPN-SAS-826A and BPN-SAS-846A backplane, the green/blue (activity) LED will turn on solid. However, other Supermicro backplane would show, while installing SATA hard drive LED will turn off. Is BPN-SAS-826A and BPN-SAS-846A backplane defective? Answer BPN-SAS-826A and BPN-SAS-846A backplanes were designed base on customer request, which blue LEDs are always ON no matter SAS or SATA drives are used when we first release these two backplane. Later on, our upper management decided that blue LED should turn on solid when SAS hard drive is installed. Blue LED will be OFF if SATA hard drive install. This would be implemented on other backplanes. Was this FAQ helpful? YES      NO Enter Comments Below: Note: Your comments/feedback should be limited to this FAQ only. For technical support, please send an email to support@supermicro.com.  Enter your email address below if you'd like technical support staff to reply:  Please type the Captcha (no space) F D K L FAQ Stats FAQ ID Related Category / Keyword Date Posted Code 22157 N/A 12/11/15     Print Answer