Supports IEEE802.3x full/half‑duplex, auto‑MDI/MDI‑X. Excellent ruggedized hardware design of 12 to 48 VDC redundant power inputs and a wide‑operating temperature from ‑40 C to 75 C without the use of internal fans are providing superior reliability. DIP switches for built‑in alarm relay function, assisting network engineers with notification when port link‑down and power failures occur.