ASRock’s got their manuals up. Arrow Lake’s 5x20 + 4x4 + DMI 4x8 + 2 USB 4/Thunderbolt 4 (3x8) and then there’s usually 4x16 user assignable off the Z890 (one 4x17).
| mobo | CPU | Z890 PCIe 4.0 | Z890 PCIe 3.0 |
|---|---|---|---|
| Z890 Taichi | 5x16, 5x4 M.2, 4x4 M.2 | 3xM.2, M.2/x4 | 2x gen 1, 5 GbE, 2.5 GbE |
| Z890 Taichi Lite | 5x16, 5x4 M.2, 4x4 M.2 | 3xM.2, M.2/x4 | 2x gen 1, 5 GbE, 2.5 GbE |
| Z890 Steel Legend | 5x16, 5x4 M.2, 4x4 M.2 | 2xM.2, 2x4(16) | 2x gen 1, WiFi, 2.5 GbE |
| Z890 Pro RS | 5x16, 5x4 M.2, 4x4 M.2 | 2xM.2, 2x4, x1, WiFi | 2.5 GbE |
| Z890 Nova | 5x16, 5x4 M.2, 4x4 M.2 | 3xM.2, M.2/x4(16) | 2x gen 1, WiFi, 2.5 GbE |
| Z890 Live Mixer | 5x16, 5x4 M.2, 4x4 M.2 | 2xM.2, 2x4(16), 2x gen 1, WiFi, 2.5 GbE | |
| Z890 Riptide | 5x16, 5x4 M.2, 4x4 M.2 | 3xM.2, M.2/x4(16), WiFi, 2.5 GbE | 2x gen 1 |
| Z890 Lightning | 5x16, 5x4 M.2, 4x4 M.2 | 2xM.2, 2x4(16) | 2x gen 1, WiFi, 2.5 GbE |
Also, the couple MSIs I look at by default.
| mobo | CPU | Z890 PCIe 4.0 | Z890 PCIe 3.0 |
|---|---|---|---|
| Z890 Carbon | 5x16 or 5x8/x4/M.2, 5x4 M.2 | 2xM.2, x4(16) | (no block diagram) |
| Z890 Tomahawk | 5x16, 5x4 M.2, 4x4 M.2 | 2xM2, 2x4(16) | (no block diagram) |
All of these boards have four SATA ports.