Article number: BN300

SYSTEM POWER 9 CM

400W

“System Power is the entry to silent PC building, which still offers up to 80PLUS^® Gold efficiency. With System Power we offer you everything you need for a reliable and cost-efficient operation.”

Christian Berndt, Technical Specialist

SYSTEM POWER 9 CM

400W

Proven Reliability and Good Efficiency

be quiet! System Power 9 CM 400W offers renowned be quiet! reliability and quietness for cost-effective and reliable systems.

Rock-solid stability with 2 strong 12V-rails
DC-to-DC technology for tight voltage regulation
2 PCIe connectors for powerful GPUs
Temperature-controlled 120mm fan reduces system noise
Stand-by drain of less than 0.15 watts
80 PLUS^® Bronze efficiency (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
3-year manufacturer’s warranty

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Characteristics

VERY QUIET OPERATION

Attained by using a high-quality fan

System Power 9 CM 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.

80 PLUS^® BRONZE CERTIFICATION

High operating efficiency

The 80 PLUS 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 9 CM 400W provides stable and dependable power for CPU and GPU. It is equipped with 2 independent 12V-rails and supports several graphics cards with 2 PCI express connectors for powerful GPUs.

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.

SEMI-MODULAR CABLE MANAGEMENT

Total convenience and attractive design for cost-effective systems

System Power 9 CM 400W comes with full high-quality black sleeved cables that add a touch of class to any PC system. Thanks to the semi-modular cable management, cables that serve no purpose in the system are left out.

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:

Product Series

General data

Model	System Power 9 CM 400W
Continuous power (W)	400
Peak power (W)	-
Form factor	Version 2.51
Form factor EPS 12V	-
Topology	DC/DC
Digitally controlled	-
Voltage (Vac)	200 - 240
Frequency (Hz)	50
Input current (A)	6
Power factor at 100% load	>0.95
Modern standby	-
Power consumption in standby (W)	<0.15
Average life time (h / 25°C)	100,000
Operating temperature up to (°C)	40

Infographics

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						Efficiency
						
									80 PLUS certificationBronze
								
									Efficiency (%) at 230V, 2% load-
								
									Efficiency (%) at 230V, 10% load81
								
									Efficiency (%) at 230V, 20% load86
								
									Efficiency (%) at 230V, 50% load89
								
									Efficiency (%) at 230V, 100% load87
								
						Fan and cooling technology
						
									FanHigh quality fan
								
									Fan size (mm)120
								
									Bearing technologySleeve
								
									Motor technology4-pole fan motor
								
									Max. fan speed (rpm)1800
								
									dB(A) at 10% load9.1
								
									dB(A) at 20% load9.3
								
									dB(A) at 50% load9.7
								
									dB(A) at 100% load15

						Output
						
									Multi-rail operation (12V rails)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 12VHPWR (W)-
								
									Max. combined power 3.3V + 5V (W)103
								
									Hold-up time at 100% load (ms)17
								
									Power good signal (ms)100 - 150
								
						Cables and connectors
						
									Modular cables-
								
									Sleeved cablesP24, P4+4
								
									Flat cablesPCIe / drives
								
									Maximum cable length (cm)103
								
									Cable length to motherboard (cm)54
								
									No. of cables5
								
									ATX-Motherboard (20+4-pin)1
								
									P4+4 (CPU)1
								
									P8 (CPU)-
								
									P4 (CPU)-
								
									12VHPWR cables-
								
									PCI-e 6+2-pin (GPU)2
								
									PCI-e 6-pin (GPU)-
								
									SATA5
								
									PATA2
								
									FDD (Floppy)1

						Protection
						
									OTP (over temperature protection)✓
								
									OCP (over current protection)✓
								
									OPP (over power protection)✓
								
									SCP (short circuit protection)✓
								
									OVP (over Voltage protection)✓
								
									UVP (under Voltage protection)✓
								
									SIP (Surge & Inrush Protection)✓
								
						Safety certification
						
									BSMI-
								
									CB✓
								
									CCC-
								
									CE✓
								
									cRUus-
								
									cTUVus-
								
									CU✓
								
									FCC-
								
									RCM✓
								
									TÜV✓
								
									UKCA-

						Environmental directives
						
									Energy Star6.1
								
									ErP✓
								
									WEEE✓
								
									RoHS✓
								
									Triman-
								
						Scope of delivery
						
									Thumb screws-
								
									Screws✓
								
									Cable ties-
								
									Velcro cable ties-
								
									User manual languagesDE, EN, ES, FR, PL, RU
								
									OCK slot bracket with switch / OCK jumper-
								
									SFX-to-ATX adapter bracket-

						Casing
						
									Dimensions without cable (L x W x H), (mm)140 x 150 x 86
								
									Weight (kg)1.49
								
									ColorBlack
								
						Service
						
									Warranty (Years)3
								
									Express replacement service in first year-
								
									International hotline / free of charge✓ / DE, FR

						Logistics data and RRP
						
									Article numberBN300
								
									EAN code4260052187210
								
									Dimensions, package (L x W x H), (mm)268 x 97 x 195
								
									Gross weight, package (kg)2.11
								
									Pieces per packaging unit6
								
									Dimensions, shipping box (L x W x H), (mm)215 x 311 x 556
								
									Gross weight, shipping box (kg)13.36
								
									RRP (€)54.90

SYSTEM POWER 9 CM | 400W
Article number: BN300

Documents

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Properties

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Power Cable

80 PLUS certification	Bronze
Efficiency (%) at 230V, 2% load	-
Efficiency (%) at 230V, 10% load	81
Efficiency (%) at 230V, 20% load	86
Efficiency (%) at 230V, 50% load	89
Efficiency (%) at 230V, 100% load	87

Fan	High quality fan
Fan size (mm)	120
Bearing technology	Sleeve
Motor technology	4-pole fan motor
Max. fan speed (rpm)	1800
dB(A) at 10% load	9.1
dB(A) at 20% load	9.3
dB(A) at 50% load	9.7
dB(A) at 100% load	15

Multi-rail operation (12V rails)	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 12VHPWR (W)	-
Max. combined power 3.3V + 5V (W)	103
Hold-up time at 100% load (ms)	17
Power good signal (ms)	100 - 150

Modular cables	-
Sleeved cables	P24, P4+4
Flat cables	PCIe / drives
Maximum cable length (cm)	103
Cable length to motherboard (cm)	54
No. of cables	5
ATX-Motherboard (20+4-pin)	1
P4+4 (CPU)	1
P8 (CPU)	-
P4 (CPU)	-
12VHPWR cables	-
PCI-e 6+2-pin (GPU)	2
PCI-e 6-pin (GPU)	-
SATA	5
PATA	2
FDD (Floppy)	1

OTP (over temperature protection)	✓
OCP (over current protection)	✓
OPP (over power protection)	✓
SCP (short circuit protection)	✓
OVP (over Voltage protection)	✓
UVP (under Voltage protection)	✓
SIP (Surge & Inrush Protection)	✓

Thumb screws	-
Screws	✓
Cable ties	-
Velcro cable ties	-
User manual languages	DE, EN, ES, FR, PL, RU
OCK slot bracket with switch / OCK jumper	-
SFX-to-ATX adapter bracket	-

Dimensions without cable (L x W x H), (mm)	140 x 150 x 86
Weight (kg)	1.49
Color	Black

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

Article number	BN300
EAN code	4260052187210
Dimensions, package (L x W x H), (mm)	268 x 97 x 195
Gross weight, package (kg)	2.11
Pieces per packaging unit	6
Dimensions, shipping box (L x W x H), (mm)	215 x 311 x 556
Gross weight, shipping box (kg)	13.36
RRP (€)	54.90

BSMI	-
CB	✓
CCC	-
CE	✓
cRUus	-
cTUVus	-
CU	✓
FCC	-
RCM	✓
TÜV	✓
UKCA	-

Energy Star	6.1
ErP	✓
WEEE	✓
RoHS	✓
Triman	-

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SYSTEM POWER 9 CM

SYSTEM POWER 9 CM

Proven Reliability and Good Efficiency

Characteristics

VERY QUIET OPERATION

80 PLUS® BRONZE CERTIFICATION

HIGH PERFORMANCE FOR YOUR SYSTEM

INNOVATIVE DC-TO-DC CONVERSION

SEMI-MODULAR CABLE MANAGEMENT

COMPREHENSIVE PROTECTION

Awards

General data

Infographics

Efficiency

Fan and cooling technology

Output

Cables and connectors

Protection

Safety certification

Environmental directives

Scope of delivery

Casing

Service

Logistics data and RRP

SYSTEM POWER 9 CM | 400W Article number: BN300

Documents

Images

Properties

Best combined with

80 PLUS^® BRONZE CERTIFICATION

SYSTEM POWER 9 CM | 400W
Article number: BN300