How to remove dual SATA flex bays and replace them with PCIe + SATA flex bay on Precision 5860 Tower / Precision 7865 Tower / Precision 7875 Tower

Published JUL 17, 2026

Learn how to remove dual SATA flex bays and replace them with PCIe + SATA flex bay on Precision 5860 Tower /Precision 7865 Tower/Precision 7875 Tower.

Note: This video was created with a Precision 7865 but is relevant to Precision 5860 Tower and Precision 7875 Tower.

This video shows how to convert the flex bay on Precision 5860 Tower / Precision 7865 Tower/ Precision 7875 Tower to support and replace the PCIe + SATA flex bay. 

Before you begin, turn off the computer, and disconnect all the attached peripherals. 

Ensure that you always use ESD protection when working inside the computer.  

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