What this checker answers
An NVMe expansion card can place one or more M.2 drives behind a motherboard PCIe slot. The difficult part is the lane path: a slot may look like x16 while operating with fewer electrical lanes, and a passive multi-drive card needs the host to expose the specific lane split documented for that slot.
This first catalog covers four ASUS motherboard models. Pick the board model and CPU group first, then the slot, adapter topology, and drive count. The result shows the documented electrical lanes, explicit lane mapping, conditional conflicts, and the source document beside the conclusion. Where ASUS does not state a board revision, the result says so.
How each topology is handled
- Single-drive adapter: the checker looks for a documented lane path of at least four electrical lanes. It does not decide physical clearance, boot support, firmware behavior, or operating-system support.
- Passive dual-drive card: the selected slot needs explicit evidence for two drives, such as a documented x4/x4 mapping or an exact manufacturer-stated maximum for the named adapter.
- Passive quad-drive card: the selected slot needs explicit evidence for four drives, such as x4/x4/x4/x4 or an exact manufacturer-stated maximum for the named adapter.
- Switched card: a genuine onboard PCIe switch handles downstream division without host bifurcation. The board record alone cannot confirm that exact card’s fit, firmware, boot support, or drive enumeration.
The requested drive count is also checked against the chosen adapter topology. A passive dual card cannot hold three drives, even if the host slot documents more lane groups.
The motherboard tables in this first catalog name ASUS Hyper M.2 adapter models. Their socket-to-lane mapping is evidence for those named cards. A third-party passive carrier needs the same mapping to the active x4 groups; the reported lane count by itself does not establish that its sockets line up.
Read the conflicts before installing
PCIe slots can share lanes or change behavior with a particular CPU group, another populated slot, or an onboard connector. The result repeats the source record’s conditional text. Treat those conditions as part of the result, not as optional notes.
“Not documented” is a deliberate outcome. It does not claim the configuration is impossible. It says the available manufacturer evidence does not establish the requested layout, so the next step is the exact motherboard model’s manual, any manufacturer-stated revision, and the exact adapter documentation.