Amazon.com: New Laptop SATA Hard Drive Connector Adapter with Cable Replacement for Dell XPS 15 9560 9550 Precision 5520 5510 DYGX 0XDYGX DC02C00BL00 : Electronics
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i did it. XPS 15 9560 with 56Wh battery and 1TB secondary hard drive in place of the 97Wh battery : r/Dell
Dell XPS 15 9560 Laptop Hard Drive Replacement - LaptopHDS.com
Dell XPS 15 9560 - Hard Drive HDD 2.5 W/ Windows 10 Pro 64-Bit (READ FIRST) | eBay
Dell XPS 15 (9560) Review: More Performance, Same Killer Good Looks | HotHardware
Dell XPS 15 9560 - Hard Drive HDD 2.5 W/ Windows 10 Pro 64-Bit (READ FIRST) | eBay