This part is a kind of semiconductor called AS1854.

Function of this product has Digital Power PoE PD Controllers.

Manufacturers : Akros Silicon

Image and pinout :

Some of the text within the PDF file :

AS1854/44/34/24 Digital Power PoE PD Controllers with HV Isolation and Quad DC-DC Outputs GENERAL DESCRIPTION The AS18x4 product family integrates Akros GreenEdge™ Isolation technology with next generation Power-over-Ethernet (PoE) PD and power conversion technology to deliver groundbreaking power integration, and enable a new range of Digital Power PoE PD capabilities and solutions. A Type 1 (IEEE® 802.3af) and Type 2 (IEEE® 802.3at) compliant PD is integrated with high-voltage isolation and quad-output digital power DC-DC converters – resulting in a complete PoE & Power management solution in a single device with minimal external components. In addition to enabling digital PoE power conversion, Akros GreenEdge™ isolation enables direct digital management of both isolated P [ ... ]

AS1854 PDF Datasheet Download