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Cables

Installation

Please read the instructions in its entirety before proceeding with installation.

1. 

Make sure the I/O switch of the new PSU is at the OFF “O” position. Mount the PSU 

into the computer case or chassis.

2.  Connect the main 20+4pin ATX connector to the motherboard. If the motherboard 

has a 20-pin socket, please detach the 4-pin connector, and then connect the 20-pin 

connector to the motherboard.

3. 

Connect the 4+4pin CPU connector to the motherboard. Most motherboards require 

only one set of 4+4pin connector; please check the motherboard user manual to see 

if the second set of 4+4pin connector is required.

4. 

Connect the 6+2pin PCIe connector to the graphic card(s), if required by the graphic 

card(s). For 6-pin sockets, please detach the two extra pins before plugging in the 

connector.

5.  Connect the SATA connectors  to the storage drives or optical drives. (e.g. HDD, SSD, 

CD/DVD drives)

6.  Connect the 4pin molex peripheral connectors to legacy storage or optical drives, 

fans, or other peripherals.

7. 

Check all connectors are firmly and securely connected.

8.  Connect the AC power cord to the power supply and the wall socket. Flip the I/O 

switch of the PSU to the ON “I” position.

20+4pin

PSU

8pin CPU

4+4pin CPU

6+2pin PCIe

SATA

SATA

Molex/Floppy

Connectors

1x  20+4pin

1x  8pin CPU

1x  4+4pin CPU

2x  6+2pin PCIe

5x  SATA

2x  4pin Molex

1x  Floppy

ATTENTION

1. 

DO NOT open the power supply case or attempt to repair the power supply. There 

are no user-serviceable parts inside. This unit contains high voltage and presents a 

risk of electrocution if opened.

2. 

DO NOT unplug the AC power line when the power supply is in use, this may cause 

damage to the components.

3. 

DO NOT use the power supply near water, or environments with high temperature or 

high humidity.

4. 

DO NOT insert any objects through the fan grills or ventilation openings of the 

power supply.

5. 

DO NOT block the fan grills or ventilation openings.

6. 

DO NOT modify the cables or connectors included with the power supply.

7.  Only use cables provided by the manufacturer. Other cables may not be compatible 

and may cause damage to the power supply and your system.

8.  The power supply is designed for indoor use only.

9.  Any use of the power supply outside of its intended purpose, or failure to comply 

with manufacturer’s instructions or safety instructions will void all warranties and 

guarantees.

Features

◊ 

80 Plus Bronze Certified

Ensures up to 85% power efficiency at 50% load, lowering energy consumption, 

heat, and noise.

◊ 

Semi-Modular Design

Clean cable management, reducing clutter and improving airflow.

◊ 

Power Protection

Protection from electrical and thermal irregularities with OVP, OPP, SCP, and OTP.

◊ 

Active Power Factor Correction

Ensures high efficiency power usage.

◊ 

Ultra Quiet 120mm Fan

Provides silent cooling for everyday use.

Package Contents

◊  G.SKILL MB650B 650W Power Supply

◊ 

Power Cables

◊ 

AC Power Cord

◊  User Manual

Specification

Input/Output Ratings

AC Input

100-240Vac, 12A, 47-63Hz

DC Output

+5V

+3.3V

+12V

-12V

+5Vsb

17A

19A

50A

0.3A

2.5A

110W Max

600W

3.6W

12.5W

650W

Product Name

G.SKILL MB650B 650W Power Supply

Model

GPM650S-BA

Part Number

GP-BZ650A-CWMB1

Dimensions

L 140 x W 150 x H 86mm

Efficiency

80 PLUS Bronze

Protection Features

OVP, OPP, SCP, OTP

Fan

120mm, Sleeved

Warranty

5 Year Limited

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