Here's the comparison of the two Auvidea carrier boards on the attributes you asked about:
| Attribute | JNX45 | JNX46 |
|---|---|---|
| M.2 slot count | 4 slots: B-key 3042/3052, E-key 2230, M-key 2280, M-key 2280 | 5 slots: B-key 3042/3052, E-key 2230, E-key 2242, M-key 2280, M-key 2280 |
| USB ports | 7 | 8 |
| Cellular | 5G | 4G/LTE |
Key differences:
- M.2 slots: The JNX46 has one more slot than the JNX45 — the extra slot is an additional E-key 2242 slot, on top of the E-key 2230 slot both boards share. auvidea.eu +1auvidea.eu ↗“io.m2_slot_count=4”auvidea.eu ↗“io.m2_slot_count=5”
- USB: The JNX46 offers 8 USB ports versus 7 on the JNX45. - Cellular: The JNX45 supports 5G, while the JNX46 tops out at 4G/LTE. Both have a SIM slot. auvidea.eu +1auvidea.eu ↗“connectivity.cellular=5G”auvidea.eu ↗“connectivity.cellular=4G/LTE” auvidea.eu +1auvidea.eu ↗“io.usb_ports=7”auvidea.eu ↗“io.usb_ports=8”
One other distinction worth noting: the JNX46 also includes a mini-PCIe slot (1) and DisplayPort, which the JNX45 does not list — this can matter if you plan to use a mini-PCIe cellular modem rather than an M.2 module. auvidea.euauvidea.eu ↗“io.mpcie_slot_count=1”
Both boards are active, support Orin NX / Orin Nano / Xavier NX, and belong to the Auvidea JNX40 product line.