How Many Devices Can One PC Control? USB vs OTG/LAN Scaling Rules

**Typical factory guidance** - 1 PC → 3–5 motherboard boxes (60–100 headless nodes) - 1 PC → 2–4 × 32PCS boxes (software dependent) - Heavy mirroring reduces headroom — batch jobs tolerate more nodes than live mirror farms **USB mode limits** Windows USB host controllers saturate before CPU. Symptoms: "insufficient USB resources". Fix: powered USB 2.0 hubs, PCIe cards, or migrate to OTG/LAN. **OTG/LAN mode** Devices on router segment; PC scans IP range. Scales past USB limits but needs DHCP capacity and enterprise router above 300 devices. **Written PC baseline** Xeon E5-2680 V2 class, 32 GB RAM, SSD, multiple USB 2.0 root ports. See /manual#recommended-pc. RFQ with target node count: /contact · Packages: /packages