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Silver rectangular AT power supply with voltage switch and P8 P9 connectors

Ruth's sister

Ruth's sister PP-300V AT 300W 115/230V P8 P9 internal power cable

SKU CH-ZJDG-K5JEF

A 300 W AT power supply with P8 and P9 connectors, 115 / 230 V input switch, five IDE ports and a floppy drive interface

  • 300W output powers desktop and industrial systems
  • 115/230V switchable input suits global mains voltages
  • P8 and P9 connectors fit legacy AT motherboards
  • 60000-hour MTBF at 25°C ensures long service life
  • Over-voltage, over-current, overload and short-circuit protection safeguards components

PP-300V AT 300W Industrial Power Supply

The Ruth's sister PP-300V is a 300W AT form-factor power supply built for industrial chassis and IPC systems. It accepts 115V or 230V AC input via a manual voltage selector switch and delivers power through non-modular cabling. The unit includes active PFC and protection against over-voltage, over-current, overload and short circuits. It is rated for 60,000 hours mean time between failures at 25°C ambient temperature.

Suits legacy AT builds; not for modern ATX systems

This supply fits builders maintaining older industrial PCs, security DVRs or cutting machines that require P8 and P9 motherboard connectors. It provides five IDE power ports and one floppy drive connector for vintage storage devices. Systems needing 20-pin or 24-pin ATX main power, dedicated PCIe graphics connectors or SATA power cables must use a different unit.

Fits 4U industrial chassis with hook mounting

The 140mm x 150mm x 85mm enclosure includes a rear hook for secure installation in compatible 4U cases. Non-modular cables reduce internal clutter only when every supplied connector is used. The 1.5KV high-voltage isolation test and 40°C aging burn-in indicate readiness for continuous operation in surveillance or automation environments.

How it compares

Measured against everything we stock in Internal PSU & Riser Cables, at today’s prices. Recalculated every night.

Price $72.99
Pricier than about 90% of the 7,839 comparable items (median $14.99).

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Specifications

No published specifications for this item yet.

Questions about this item

Does my chassis need an AT-style motherboard connector to use the P8 and P9 plugs on this 300W supply?

Yes, the unit provides one P8 and one P9 connector, which are the standard AT motherboard power interface.

Can I keep using my older IDE hard drives and floppy drive with the five IDE ports and single floppy connector on this unit?

The supply includes five IDE ports and one floppy drive interface, so legacy drives connect directly without adapters.

How do I confirm the 115 / 230 V input switch is set correctly after installation?

Check the rear voltage selector; it must match your mains supply — 115 V or 230 V — before powering on.

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