How Do ELO Backpacks Power Multiple Displays

Understanding Power Capacity

The ELO Backpack is built to run a single display or display plus peripheral combination through its 12-volt regulated supply. Each Backpack includes a rated power brick sized for typical display loads.
When connecting two screens, total current draw must not exceed the adapter’s wattage. This means calculating the combined power of both panels and any peripherals.

If each display draws around 25 watts, plus 10 watts for attached USB devices, a 65-watt power brick is already near its threshold. Operating near or above that level for long periods generates heat and can reduce adapter life.

Always check the datasheet for both devices. If in doubt, power each display separately while keeping video signals mirrored through HDMI.

Distributing Video and USB

The Backpack outputs one HDMI and one USB signal. If you plan to duplicate video, use an active HDMI splitter that regenerates signal strength. Passive Y-cables often cause flickering and are unsafe for commercial operation.

For touch control on multiple screens, each monitor must have its own USB link back to the Backpack or host system. You can connect through a powered hub, but verify that each USB path maintains stable voltage.

Keep HDMI lengths under 5 meters and USB under 3 meters to preserve signal integrity. If longer distances are needed, use optical HDMI or USB extender kits.

Managing Heat and Enclosures

More connected displays produce more heat inside kiosks. Add passive vents or a quiet fan if the enclosure traps warm air. Position Backpacks where airflow is not blocked by brackets or cable bundles.

Monitor device temperature through ELOView logs. Sustained readings above 60°C indicate insufficient ventilation.

Example

A retailer wanted synchronized menus on two 15-inch ELO displays driven by one Backpack. Engineers used powered HDMI splitters and independent power supplies per display. After six months of continuous operation, no voltage drops or thermal alarms were recorded.

Final Thoughts

ELO Backpacks can feed multiple displays if you separate power lines, use active distribution, and verify current draw. Respecting electrical limits turns a simple media controller into a stable multi-display engine.

Tags: Backpack, Power Distribution, Multi-Display, HDMI Setup
Author: Emilio Bourdages
Blog: Learn