NVMe Drive Caddy Part Number for PowerEdge XR12

Hi,

There is no supported “extra cable” you can buy to re wire an H755 NVMe backplane to CPU PCIe directly; to get direct attach you effectively need the backplane/cable set for one of the S150/onboard NVMe configurations. Since those assemblies are tied to specific XR12 base configurations, We normally treat this as a field replaceable backplane/cable kit change rather than a simple upgrade cable, and part numbers for those kits are not published generically.

Recommendation for your use case
For caddies: order Dell 2.5" SFF carriers compatible with XR12, e.g. 85PPW/085PPW or whatever equivalent Dell lists against your service tag.

For bypassing the H755: open a Dell sales/support case with your service tag and request the “x6 2.5 NVMe (direct attach/S150) backplane and cable kit” for XR12, and ask explicitly whether conversion from your current H755 NVMe configuration to direct attach is supported; this is the only clean way to get CPU direct PCIe wiring without fighting undocumented proprietary cables