Among the AGX Xavier carrier boards in the catalog, the AVerMedia AG411 offers the most M.2 slots: 4 sockets in total — three M-key 2280 slots (suited for NVMe drives) and one E-key 2230 slot (typically Wi-Fi/BT) — making it the strongest fit for a multi-drive NVMe data recorder. It is a carrier board for the Jetson AGX Xavier / AGX Xavier Industrial, with 2x Ethernet, 1x CAN, 6x USB, 12–54 V input, and -20 to 85 °C operating range. avermedia... +2avermedia.com ↗“M-key 2280, M-key 2280, M-key 2280, E-key 2230”avermedia.com ↗“io.m2_slot_count=4”avermedia.com ↗“AVerMedia carrier board for Jetson AGX Xavier/AGX Xavier Industrial, 32 INT8 TOPS (dense), 2x Ethernet, 1x CAN, -20 to 85 °C, 6x USB”
Runner-up: 3 M.2 slots each
| Carrier board | M.2 slots | NVMe-relevant slots |
|---|---|---|
| AVerMedia AG411 | 4 | 3x M-key 2280 |
| Connect Tech Rogue (AGX101) | 3 | 2x M-key (NVMe) + 1x E-key |
| Realtimes RTSO-1001 | 3 | 2x M-key + 1x E-key |
The Connect Tech Rogue (AGX101/AGX111) has three M.2 sockets — two M-key slots described by Connect Tech as NVMe slots, plus one E-key slot for Wi-Fi/Bluetooth — with 2x GbE, 3x USB 3.1 Type-C, and up to 6x MIPI CSI-2 camera inputs, rated -40 to +85 °C. The Realtimes RTSO-1001 likewise carries three M.2 sockets (M-key, M-key, E-key) with 2x GbE, 5x USB, and 8 GMSL camera inputs, rated -40 to +85 °C. connecttec... +3connecttech.com ↗“io.m2_slots=M-key, M-key, E-key”connecttech.com ↗“two NVMe M.2 Key M slots and up to 6x 2-lane MIPI CSI-2 camera inputs”realtimesai.com ↗“io.m2_slots=M-key, M-key, E-key”realtimesai.com ↗“io.gmsl_camera_inputs=8”
One thing I could not determine from the catalog: the exact per-slot PCIe lane width and bifurcation on these boards (e.g., whether the AG411's three M-key slots each run at full x4), which can matter for aggregate NVMe throughput in a recorder. The catalog also shows an io.pcie_max_gen of Gen 4 for the AG411, but lane-width details per slot are not listed. The Rogue-X2 and Rogue-X variants trade an M-key slot for a PCIe x8 edge-card connector, which could host an NVMe adapter card if you need more drives than slots. avermedia... +1avermedia.com ↗“io.pcie_max_gen=4”connecttech.com ↗“a PCIe x8 edge-card connector”