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Compact black wall adapter with fold-out prongs and barrel output

Lei Electronics Inc.

Lei Electronics Inc. 574091-001-00 MT20-21120-A09F A01F A07F AC/DC power adapter 12V 750mA

SKU CH-D8CP-D1KXG MPN 574091-001-00

Wall-mount AC/DC supply delivering 12 V at 750 mA from a 100–127 V input

  • Delivers stable 12V 750mA output for reliable device power
  • Accepts 100-127V 60Hz input for North American mains compatibility
  • Tested fully functional with no broken wires or loose particles
  • Built-in safeguards against incorrect voltage, short circuit and overheating
  • Genuine LEI brand adapter manufactured with quality materials

What this adapter powers

This 12V 750mA AC/DC wall supply is built for small electronics that need a steady 12 volt source. It accepts 100-127V 60Hz mains input and delivers up to 9 watts of regulated output. The unit suits devices such as routers, modems, LED strips or similar low-power gear that specify a 12V centre-positive barrel jack.

Steady output under load

The adapter maintains its rated 12V 750mA continuously rather than only in short bursts. Internal protection circuits guard against incorrect voltage, short circuit and internal overheating so the supply stays stable during extended operation. Each unit is tested for wire integrity and jack function before it ships.

Thermals and power draw

Normal use keeps the enclosure warm but within safe limits thanks to the built-in overheating safeguard. The 0.25A input current at 100-127V means minimal mains draw and no audible fan noise because the design is passively cooled. Minor cosmetic marks on the case do not affect thermal performance.

How it compares

Measured against everything we stock in AC Adapters & Power Bricks, at today’s prices. Recalculated every night.

Price $16.99
Cheaper than about 75% of the 3,875 comparable items (median $23.99).

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Specifications

Product
Model name574091-001-00

Questions about this item

How much heat does the 12V 750mA adapter produce when running all day?

The unit draws 0.25A at 100-127V 60Hz input and delivers 12V 750mA output; typical wall adapters of this rating run warm but not hot during continuous use.

What must I already own for the 574091-001-00 adapter to work?

You need a device that requires exactly 12V 750mA DC with a matching barrel connector and a standard 100-127V AC outlet.

Will the MT20-21120-A09F unit power older equipment that also uses 12V 750mA?

Yes, any legacy hardware rated for 12V 750mA with the same plug polarity will operate correctly from this supply.

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