Advantech’s EKI-2728 supports Gigabit Ethernet. With a wide power input from +12 V_DC to +48 V_DC, this switch has power polarity reverse protect and an overload current resettable fuse. As the power supply turns normal, EKI-2728 will automatically get back to normal operation state. Each port of EKI-2728 has two LEDs to show the link status transmission speed and collision status. It also provides a relay output for an event alarm. In the event of a power failure, the built-in LED will activate the alarm to notify administrators. With a metal housing that has an IP30 rating, these EKI-2728 switches are ideal for industrial, commercial, and retail applications.