The ADS-40SI-19-3 is a switching AC power adapter manufactured by Hoioto (sometimes listed as Honoto). It is primarily used for electronic devices such as monitors, laptops, and digital video recorders (DVRs). 

Technical Specifications

The model number covers a few variations with different power outputs. Most commonly, it is found in a 40W or 30W configuration: 

Input Voltage: 100–240V AC, 50/60Hz (Worldwide compatibility).

Output Voltage: 19V DC.

Current/Wattage Options:

40W Model (19040E): 19V at 2.1A.

30W Model (19030E): 19V at 1.58A.

Connector Tip Size: Most versions use a 5.5 x 1.7 mm barrel connector. 

Common Compatible Devices

This adapter is frequently used as a power supply for the following:

Monitors: Specifically Acer brand monitors.

Laptops: Compatible with Avita laptops.

DVRs: Used for AVTECH AVC792PV H.264 4-channel DVRs

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