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Brand: be quiet!

System Power 9 | 400W CM

be quiet! System Power 9 | 400W CM BN300

80 PLUS certification 80 PLUS Bronze
AC input frequency 50 Hz
AC input voltage 200 - 240 V
ATX version 2.51
Bearing technology Sleeve
Cabling type Semi-Modular

About this item

Proven Reliability and Good EfficiencySpecially designed by be quiet! with the price-conscious PC builder in mind: System Power 9 400W CM offers renowned be quiet! performance and quietness and makes it possible to build cost-effective and reliable systems.

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Product information

About this product

  • Rock-solid stability with two strong 12V-rails
  • Equipped with DC-to-DC technology for tight voltage regulation
  • Two PCIe connectors for multi-GPU system configurations
  • Temperature-controlled 120mm fan reduces system noise
  • Low stand-by drain of less than 0.15 watts
  • 80 PLUS® Bronze efficiency of up to 89%
  • Semi-modular, high-quality sleeved and flat cables
  • All-in-one cable with S-ATA, HDD and FDD connectors
  • Complete suite of top safety features
  • Meets latest Intel® C6/C7, ErP and Energy Star 6.1 guidelines
  • Supports latest Intel® and AMD™ processors
  • Product conception, design and quality control in Germany

Proven Reliability and Good Efficiency

Specially designed by be quiet! with the price-conscious PC builder in mind: System Power 9 400W CM offers renowned be quiet! performance and quietness and makes it possible to build cost-effective and reliable systems.

Product details

40
80 PLUS certification 80 PLUS Bronze
AC input frequency 50 Hz
AC input voltage 200 - 240 V
ATX version 2.51
Bearing technology Sleeve
Cabling type Semi-Modular
Combined power (+12V) 384 W
Combined power (-12V) 3.6 W
Combined power (+3.3V) 103 W
Combined power (+5V) 103 W
Combined power (+5Vsb) 15 W
Compatible products Intel C6/C7
Cooling type Active
CPU power cable length 60 cm
CPU power connector (4+4 pin) Yes
Efficiency 89%
Floppy drive power connector 1
Hold time 17 ms
Input current 4 A
Max output current (-12V) 0.3 A
Max output current (+12V1) 22 A
Max output current (+12V2) 18 A
Max output current (+3.3V) 24 A
Max output current (+5V) 15 A
Max output current (+5Vsb) 3 A
Motherboard power cable length 45 cm
Motherboard power connector 20+4 pin ATX
Number of PATA power connectors 2
Number of SATA power connectors 5
PCI Express connector Yes
PCI Express power cable length 50 cm
PCI Express power connectors (6+2 pin) 2
Power factor 0.95
Power Factor Correction (PFC) type Active
Power protection features Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage
Power supply unit (PSU) form factor ATX
Product colour Black
Purpose PC
SATA power cable length 550,670 mm
Total power 400 W

Logistics

EAN4260052187210
Unit of measure—
Weight—
Dimensions —
Dangerous goodsNo

Warranty

  • 12-month warranty on everything we sell.
  • Runs from the day your order is delivered.
  • Faults under normal use are repaired, replaced or refunded.
Read the warranty terms

Payment

  • Clearpay
  • Klarna
  • Visa and Mastercard, processed securely by Tyl by NatWest with 3D Secure.
  • PayPal — your PayPal balance or a saved card or bank account.
  • Clearpay, Klarna and Billie — pay later or in instalments, processed by Stripe.
  • No surcharge on any payment method; refunds go back to the way you paid.
Read the payment policy
Spread the cost
  • Clearpay
  • Klarna
    • Clearpay
    4 interest-free payments of £11.92 with Clearpay. Learn more
    • Klarna
    3 payments of £15.89 at 0% interest with Klarna. Learn more
    Businesses: pay in 30 days on invoice with Billie. Learn more

Choose at checkout. 18+, T&Cs apply, credit subject to status.

Return policy: Item can be returned in its original condition for a full refund within 14 days of receipt, with a free tracked Royal Mail return label. Read full return policy

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