Article number: BN606

SYSTEM POWER U9

400W

Proven Reliability and Good Efficiency

be quiet! System Power U9 400W offers renowned be quiet! reliability and quietness for price-conscious PC builders.

  • Rock-solid stability with two strong 12V-rails
  • DC-to-DC technology for tight voltage regulation
  • Multi-GPU support with two PCIe connectors
  • Temperature-controlled 120mm fan reduces system noise
  • Stand-by drain of less than 0.1 watts
  • 80PLUS® Bronze efficiency (up to 89%)
  • High-grade black cables
  • Complete suite of top safety features
  • Meets latest Intel® C6/C7, ErP and Energy Star 6.1 guidelines
  • 3-year manufacturer’s warranty
  • Product conception, design and quality control in Germany

VERY QUIET OPERATION

Attained by using a high-quality fan

System Power U9 400W is equipped with a temperature-controlled 120mm fan. It provides you with the low noise operation that be quiet! is famous for, built into an entry-level system.

80PLUS® BRONZE CERTIFICATION

High operating efficiency

The 80PLUS® Bronze certification is convincing evidence of this PSU’s efficient and power saving operation. It is a remarkable achievement for this class of PSU, realizing an efficiency rating of up to 89%.

HIGH PERFORMANCE FOR YOUR SYSTEM

Proven reliability for CPU and GPU

System Power U9 400W provides stable and dependable power for CPU and GPU. It is equipped with two independent 12V-rails and supports several graphics cards with two PCI express connectors for multi-GPU systems.

INNOVATIVE DC-TO-DC CONVERSION

Equipped with a wealth of advanced technology

The PSU is equipped with DC-to-DC conversion for tight voltage regulation, even under heavy cross-loading conditions. This ensures reliable operation and makes it ready for the next generation of processors and graphics cards.

HIGH-GRADE BLACK CABLES

Attractive design for cost-effective systems

System Power U9 400W comes with a high-quality black sleeved 24-pin cable that adds a touch of class to any PC system. The P4+4, PCIe and drives cables are flat.

COMPREHENSIVE PROTECTION

A complete range of safety features

Top component protection with a full suite of safety functions, including OCP, OVP, OPP, OTP UVP and SCP, which provide the ultimate in secure operation.

All models at a glance:

Features

General data

Model System Power U9 | 400W
Continuous power (W) 400
Peak power (W) -
Form factor ATX 12V Version 2.4
Form factor EPS 12V Version 2.92
Modular cable management -
Topology DC-DC
Wire-free design (DC-side) -
Voltage (Vac) 100-240
Frequency (Hz) 50 - 60
Input current (A) 8 / 4
PFC active
Power factor at 100% load >0.95
Compliant to Intel C6/C7
Power consumption in standby (W) <0.1
Average life time (h / 25°C) 100.000
Operating temperature up to (°C) 40

Infographics

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Output

12V rails (multi-rail operation) 2
12V single rail operation -
Overclocking key -
+3.3V (A) 24
+5V (A) 15
+12V1 (A) 22
+12V2 (A) 18
+12V3 (A) -
+12V4 (A) -
+12V5 (A) -
+12V6 (A) -
-12V (A) 0.3
+5Vsb (A) 3
Max. combined power 12V (W) 384
Max. combined power 3.3V + 5V (W) 103
Hold-up time (ms @ 100%) 17 @ 75% load

Fan / Cooling technology

Fan type high-quality fan
+SilentWings -
Motor technology 4-pole fan motor
Bearing technology Sleeve
Fan size (mm) 120
Max. fan speed (rpm), temperature-dependent 2,100
Temperature control for case fans -
dB(A) at 20% load 13.71
dB(A) at 50% load 14.56
dB(A) at 100% load 19.63

Protection

OCP (over current protection)
OVP (over voltage protection)
UVP (under voltage protection)
SCP (short circuit protection)
OTP (over temperature protection)
OPP (over power protection)

Safety certification

CE
CB
TÜV
Nemko (N) -
Semko (S) -
Fimko (FI) -
Demko (D) -
FCC
cRUus -
cTUVus
RCM (Australia)
BSMI
CU (Russia) -
CCC

Eco / Efficiency

80PLUS certification Bronze
Efficiency (%) at 230V, 20% load 88
Efficiency (%) at 230V, 50% load 89
Efficiency (%) at 230V, 100% load 86

Environmental directives

ENERGY STAR 6.1
ErP
WEEE
RoHS

Cable management / Connectors

Multi-GPU ready
Modular cable management -
Fully modular -
Sleeved cables
Flat cables P4+4, PCIe, drives
Cable length to mainboard (cm) 45
Cable length to first connector (cm) 35
Maximum cable length (cm) 91
All-in-one cable (SATA/PATA/FDD) -
No. of cables 5
ATX-Motherboard (20+4-pin) 1
P8 (CPU) -
P4+4 (CPU) 1
P4 (CPU) -
PCI-E 6-pin (GPU) -
PCI-E 6+2-pin (GPU) 2
PATA 4-pin 2
SATA 15-pin (HDD, Drives) 5
FDD (Floppy) -
External fan connectors -

Casing

Dimensions without cable (L x W x D), (mm) 140 x 150 x 86
Weight (kg) 1.9
Color black

Accessories

Thumb screws -
Screws
Cable ties -
Velcro cable ties -
Box/Bag for PSU/Cables -
User manual languages EN, DE, FR, TW, CN, JP
OCK slot bracket with switch / OCK jumper -
SFX-to-ATX adapter bracket -

Service

Warranty (Years) 3
Express replacement service in first year -
International hotline / free of charge ✓ / DE, FR

Logistics data, RRP

Article number BN606
EAN code 4260052186084
Dimensions, package (L x W x H), (mm) 268 x 97 x 195
Gross weight, package (kg) 2.22
Pieces per packaging unit 6
Dimensions, shipping box (L x W x H), (mm) 215 x 311 x 556
Gross weight, shipping box (kg) 13.32
RRP (€) 49.90

System Power U9 | 400W
Article number: BN606

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