Product Parameters

Manufacturer: Schneider Electric (Modicon)

Model: 499NEH04100 (499‑NEH‑041‑00)

Device Type: Industrial Ethernet Hub (Layer 1, shared bandwidth)

Ports: 4 × RJ45 (100BASE‑TX, 10/100 Mbps auto‑negotiation)

Data Rate: 10/100 Mbps (half‑duplex, all ports share bandwidth)

Power Supply: 18–32 VDC (24 VDC nominal)

Mounting: DIN‑rail (35 mm)

Enclosure: IP30 metal casing

Dimensions (L×W×H): 140 × 35 × 70 mm

Weight: ~0.5 kg

Status Indicators: Power, link/activity per port

Certifications: CE, UL, CSA

Status: Discontinued (obsolete)

Core Features

4‑port 100 Mbps hub for connecting PLCs, HMIs, and industrial devices.

Auto‑negotiation (10/100 Mbps, half‑duplex only).

Industrial‑grade (IP30, –0 °C to +60 °C operating temperature).

Plug‑and‑play; no configuration required.

Shared bandwidth (all ports compete for 100 Mbps; no switching).

Compatibility & Replacement

Legacy Compatibility: Modicon Premium, M340, M580, TSX series (10/100 Mbps Ethernet ports).

Direct Replacement: 499NEH14100 (4‑port 10/100 Mbps hub, ConneXium series).

Upgrade Alternative: 499NEH10410 (4‑port 10/100 Mbps switch, Layer 2, dedicated bandwidth per port).

Application

Legacy industrial Ethernet networks (10/100 Mbps, half‑duplex).

Connecting older Modicon PLCs, HMIs, and I/O modules.

Small, low‑cost networks where switching is unnecessary.

Harsh environments requiring IP30 protection and wide temperature tolerance.