O'Neil WL261176

Overview
The FCC and IC IDs are silkscreened on the board along with "PCB 271140-004" and "O'Neil Product Development Inc." in the FCC photos.

CX53111-912 is the exact chip used.

May be used in some O'Neil portable printers (OC-2 / OC2 series manual is included in the FCC docs).