Hello ivcubr, That part# is only for the HDD caddy.  As I stated earlier if you get drives with the caddies for your MD3000i, the drives come with the interposer boards.  You can’t order just the interposer boards anymore, & I am not seeing any part# for the interposer as well. Please let us know if you have any other questions.
I am looking for some clarification of compatible hard drives that will work with a PowerVault MD3000i. The list of supported hard drives shown in the following guide on Page 10-12 ([URL]  If these hard drives are purchased and do not come with the correct version of firmware is it possible to flash these through software using one of the firmware packages listed in the support page for this product? ([URL]
PowerVault MD3000i hard drive compatibility clarification