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Rectangular metal ATX power supply unit in black finish

In Win

In Win IW-P300A2-0 300 W ATX power supply

SKU CH-AXYV-XBH5Z MPN IW-P300A2-0

An ATX power supply delivering 300 W across 3.3 V, 5 V, 12 V, -12 V and 5 VSB rails for standard desktop builds

  • TypeATX
  • Maximum Power300 W
  • Input Voltage115 / 230 V
  • Input Frequency Range50/60 Hz
  • Input Current8A @ 115V, 4A @ 230V
  • Output+3.3V@28A,+5V@30A,+12V@15A, [email protected] , [email prote
  • Delivers 300 W maximum power for stable system operation
  • Dual 115 V and 230 V input supports worldwide mains voltages
  • Operates at 50 Hz or 60 Hz for broad grid compatibility
  • Strong +3.3 V and +5 V rails provide 28 A and 30 A for legacy components
  • Dedicated +5 VSB rail supplies 2 A for standby functions

ATX 300 W power supply

The In Win IW-P300A2-0 is a standard ATX power supply rated for 300 W maximum output. It suits basic desktop builds or replacement of an existing unit in a compatible chassis.

Continuous 300 W delivery with dual-voltage input

The unit accepts 115 V or 230 V input at 50 Hz or 60 Hz, drawing 8 A at 115 V and 4 A at 230 V. Its +12 V rail supplies 15 A while the +3.3 V and +5 V rails deliver 28 A and 30 A respectively, providing stable power across all rails during sustained loads.

Verify ATX fit and connector needs before ordering

Ensure your case accepts a standard ATX form-factor supply and that your motherboard and drives match the available output connectors. The +5 VSB rail provides 2 A for standby functions, and the combined minor rails support typical legacy and current peripheral demands.

Highlights

  • Delivers 300 W maximum power for stable system operation
  • Dual 115 V and 230 V input supports worldwide mains voltages
  • Operates at 50 Hz or 60 Hz for broad grid compatibility
  • Strong +3.3 V and +5 V rails provide 28 A and 30 A for legacy components
  • Dedicated +5 VSB rail supplies 2 A for standby functions

Specifications

BrandIN WIN
ModelIW-P300A2-0
TypeATX
Maximum Power300 W
Input Voltage115 / 230 V
Input Frequency Range50/60 Hz
Input Current8A @ 115V, 4A @ 230V
Output+3.3V@28A,+5V@30A,+12V@15A, [email protected] , [email protected] ,+5VSB@2A
Shipping weight2.27 kg
Package size140 × 127 × 102 mm

Questions about this item

How much heat and fan noise should I expect from the 300 W unit when it runs continuously?

The supply draws 8 A at 115 V or 4 A at 230 V and delivers up to 300 W, so sustained load will produce typical ATX heat and fan noise for a 300 W design.

Which motherboard and drive connectors must my case already provide for this ATX power supply to work?

The unit follows the ATX form factor and provides +3.3 V at 28 A, +5 V at 30 A, +12 V at 15 A and +5 VSB at 2 A through standard ATX output leads.

Will the +12 V rail at 15 A support older AGP graphics cards and IDE drives I want to keep?

The +12 V rail supplies 15 A and the +5 V rail supplies 30 A, matching the power needs of many legacy AGP cards and IDE devices.

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