For Lenovo Thinkpad T570 P51S M.2 Adapter SSD HDD Bracket & Cable 01AY476 US | eBay
Lenovo T570 mystery slot? - Laptops and Pre-Built Systems - Linus Tech Tips
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512GB SSDNow M.2 2280 SATA 6GB Compatible with Lenovo ThinkPad T570 by CMS C82 - Computer Memory Solutions
Need help with a T570 : adding a 2nd hard drive in the WWAN slot : r/thinkpad