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Rectangular silver metal power supply unit with label showing model numbers

Delta P

Delta P 145 W power supply 614-0444 for 21.5" A1311

SKU CH-E4YS-GEJDH

A 145 W internal power supply for 21.5" A1311 systems, delivering 12.1 V at 5.0 A and 17.1 A on dual 12 V rails with 100–240 V input

  • Maximum Power145 W
  • Fans0
  • ModularNo
  • Delivers up to 145 W continuous output for stable system operation
  • Fanless design with zero fans ensures silent running in quiet environments
  • Wide-range 100-240 V 4 A input supports global mains voltages without switching
  • Dual +12.1 V rails at 5.0 A and 17.1 A provide clean power to logic and GPU sections
  • Direct replacement for 21.5" A1311 boards MB950 MC309 MC413 MC508 MC509

Replacement PSU for 21.5" A1311

This Delta P unit is a direct replacement power supply built for the 21.5 inch A1311 system and compatible motherboards including MB950 MC309 MC413 MC508 and MC509. It restores power to all-in-one desktops that have lost their original supply. Installers who need a drop-in spare for these specific models will find the correct connectors and form factor.

145 W continuous output limit

The supply delivers a maximum of 145 watts across its two 12 volt rails rated at 5.0 amps and 17.1 amps respectively. Input accepts 100 to 240 volts at 4 amps for worldwide mains compatibility. Builds that require more than 145 watts or additional voltage rails cannot use this unit. The fixed 12 volt design means it cannot power components needing 3.3 volt or 5 volt rails directly.

Fanless non-modular construction

Zero fans make the unit completely silent so it suits quiet environments where acoustic noise must be minimised. Cables are permanently attached so cable routing is predetermined and excess length must be managed inside the chassis. The sealed enclosure and lack of moving parts reduce dust ingress and mechanical wear over time. Mounting points align with the original A1311 housing for a secure fit without adapters.

Points forts

  • Delivers up to 145 W continuous output for stable system operation
  • Fanless design with zero fans ensures silent running in quiet environments
  • Wide-range 100-240 V 4 A input supports global mains voltages without switching
  • Dual +12.1 V rails at 5.0 A and 17.1 A provide clean power to logic and GPU sections
  • Direct replacement for 21.5" A1311 boards MB950 MC309 MC413 MC508 MC509

Caractéristiques

Maximum Power145 W
Fans0
ModularNo

Questions sur cet article

Should I choose the 145 W or 205 W version for my 21.5" A1311?

The product name lists 145 W as the maximum power, while the supplier title also references 205 W; both figures appear on the same unit, so treat the 145 W rating as the continuous output limit.

What does the 145 W maximum power mean once the supply is installed in my iMac?

It means the unit can deliver up to 145 W continuously to the logic board and drives, with the 12 V rails providing 12.1 V at 5.0 A and 17.1 A respectively.

What interface does this PSU use and what does it cap in practice?

It connects directly to the A1311 logic board via the proprietary internal connector, so the 145 W rating caps the total power available to the motherboard and attached components.

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