Acer part number 55.LP20Q.003 is a replacement power board (PSU module) for the Acer S211HLQ 21.5-inch LCD monitor. This component manages power distribution to the display panel, backlight, and control circuitry in the S211HLQ form factor. Compatible with S211HLQ units, this board supports standard 100-240V AC input and outputs the regulated voltages required for monitor operation. Suitable for repair and refurbishment of compatible Acer LCD displays in office, educational, and general-purpose computing environments. The unit is refurbished, tested and guaranteed. Available via quote from G5 Network Group.