No — none of Diamond Systems' systems in our catalog list built-in 4G or 5G cellular connectivity. I checked all Diamond Systems products in our partner catalog against the cellular attribute (covering every 4G/5G value present in the catalog: 5G, 4G/LTE, 4G/5G, 4G LTE, 4G), and there were zero matches.
What I did find: several Diamond Systems Jackson-family products include a SIM slot and mPCIe slot, which suggests the hardware may be designed to accept a cellular modem as an add-in module — but the catalog does not list any cellular capability for them, so I can't confirm cellular support. These include the JAX-ASY-ONA8 (8 GB, Orin Nano 8GB, 40 TOPS) , JAX-ASY-ONA4 (4 GB, Orin Nano 4GB, 20 TOPS) , JAX-ASY-ONX8 (8 GB, Orin NX 8GB, 70 TOPS) , JAX-ASY-ONX16 (16 GB, Orin NX 16GB, 100 TOPS) , and the Jackson-ER variants such as JAXER-ASY-ONX8-HSP (fanless, Orin NX, 100 TOPS) and JAXER-ASY-ONX8-HSK (fan-cooled, Orin NX, 100 TOPS) — all with an E-key 2230 M.2 slot, an M-key 2242/2280 slot, and one mPCIe slot. diamondsys... +5diamondsystems.com ↗“JAX-ASY-ONA8”diamondsystems.com ↗“JAX-ASY-ONA4”diamondsystems.com ↗“JAX-ASY-ONX8”diamondsystems.com ↗“JAX-ASY-ONX16”diamondsystems.com ↗“JAXER-ASY-ONX8-HSP”diamondsystems.com ↗“JAXER-ASY-ONX8-HSK”
To be clear: these are SIM-slot-equipped systems, not systems with listed 4G/5G cellular capability. If you need cellular out of the box, I could not verify it for any Diamond Systems product; if you're open to other vendors, many partner systems in our catalog do list 4G/LTE or 5G cellular.