SATA cable arrived, so now I can have both SSD and HDD in my x270! : r/thinkpad
Lenovo ThinkPad X270 Disassembly and RAM, SSD and HDD upgrade options
Lenovo Thinkpad X270 Laptop Hard Drive Replacement - LaptopHDS.com
Amazon.com: NVME M.2 PCIe SSD to 2.5 inch Hard Drive Caddy Bracket Tray with SATA HDD Long Cable Replacement for Lenovo ThinkPad X270 NS-A933 : Electronics
Laptop HDD Connector For Lenovo ThinkPad X270 A275 DC02C00BS10 SATA DC02C009R00 M2 HDD Cable - AliExpress