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U
SER’S
M
ANUAL
E
ARTH
W
ATTS
P
OWER SUPPLY
750 G
REEN
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U
SER’S
E
ARTH
M
ANUAL
W
ATTS SERIES
EA-750 G
T
HE ENERGY-EFFICIENT
Get more power and lower your electric bill with the new EarthWatts Green series! One of the
most environmentally-friendly power supplies available, the EarthWatts EA-750 Green
efficiently delivers 750 Watts of reliable Continuous Power while meeting the Bronze level of
efficiency from 80 PLUS®, the most widely recognized independent standard in power supply
efficiency. On top of that, this EarthWatts power supply offers Universal Input to automatically
work on any power grid on the planet, and a 135 mm double ball bearing fan to keep cool.
S
TANDARDS AND FEATURES
The EA-750 Green PSU is compatible with ATX12V v2.3 and EPS12V v2.91 specifications. This PSU
features Universal Input, which automatically senses when you connect the power supply to any AC
power source between 100 ~ 240V, eliminating the need to set a voltage switch. The EA-750 Green also
features Active Power Factor Correction (Active PFC), which improves the power factor value of the PSU
by altering the input current wave shape, helping to transmit energy across the grid.
S
YSTEM PROTECTION
REEN POWER SUPPLY
PSU
A variety of industrial-grade safety circuitry will help protect your computer: OCP (Over Current
Protection), OVP (Over Voltage Protection), SCP (Short Circuit Protection), OPP (Over Power Protection)
OTP (Over Temperature Protection) and SIP (Surge & Inrush Protection). Sometimes the PSU will “latch”
into a protected shutdown state. This means that you will need to power off the PSU and clear the fault
before it will function again. There are no user-replaceable fuses in your EA-750 Green.
80 PLUS® B
80 PLUS® Bronze certification is among the highest
independent standards in power supply efficiency. This
allows the PSU to use less energy and generate less heat
so it stays cooler, runs more quietly, and lasts longer. The
EA-750 Green has been certified to be at least 82%
efficient at a wide range of operating loads and will
lower your operating costs while protecting the
environment.
RONZE CERTIFICATION
Source: 80 PLUS Verification and Testing Report
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Power Connectors
Description
+12V Rail
2 x 8(6+2)
-
pin PCI-E
2 x 8(6+2)
-
pin PCI-E
Q
UAD
+12 V
The EA-750 Green PSU uses quad +12 volt power rails. Different connectors are hooked up to separate
circuits to aid in the balanced distribution of power between devices in your computer. The +12V rails
have been assigned to different connectors, as shown in Table 2, to prevent voltage sags in one device
due to sudden demands for power by another device.
OLT RAIL DISTRIBUTION
T
ABLE 2: POWER CONNECTORS AND RAIL ASSIGNMENTS
24(20+4)-pin main connector
1
1 x 8(4+4)-pin ATX12V / EPS12V
(yellow/blue)
(yellow/green)
6 x Molex
9 x SATA
Floppy
P
OWER OUTPUT
The EA-750 Green PSU distributes a varying maximum number of amps on each rail. To see the output
capacity and regulation for each different voltage, see Table 3.
2
3
4
1
1
1
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T
ABLE 3: OUTPUT CAPACITY AND REGULATION
Output
Voltage
Load Max. Regulation Ripple & Noise
+3.3V 25A
+5V 25A
+12V1 40A
+12V2 40A
+12V3 40A
+12V4 40A
–12V 0.5A
+5Vsb 3A
The continuous maximum total output power shall not exceed 750W.
+12V
DC maximum output power shall not exceed 750W.
1-4
+3.3V and +5V DC maximum combined output power shall not exceed 150W.
±5%
±5%
±5%
±5%
±5%
±5%
±10%
±5%
50 mV
50 mV
120 mV
120 mV
120 mV
120 mV
120 mV
50 mV
I
NSTALLATION
1. Install the EA-750 Green PSU into your case with the four screws provided.
:
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2. Connect the 24-pin main power connector to your motherboard. If your motherboard
uses a 20-pin connector, detach the 4-pin attachment on the 24-pin connector.
Note: The detachable 4-pin section cannot be used in place of a 4-pin +12V connector.
3. Connect the 8-pin or 4-pin ATX12V connector for the CPU to the appropriate connector
on your motherboard. If your motherboard has an 8-pin socket with a cover on some of
the openings, we recommend that you remove the cover and use the 8-pin connector.
Note: Please also refer to your motherboard user’s manual for any special instructions.
4. Connect the PCI-E connector(s) to your graphics card(s), if applicable. PCI-E graphics
cards use different amounts of power. For some, a single 6-pin connector is sufficient,
while more powerful cards use multiple connectors, including the advanced 8-pin PCI-E
connector. The 8-pin PCI-E connectors on the EA-750 Green can be used as either 6- or
8-pin connectors.
5. Connect all Molex/SATA connector(s) to your hard drives, optical drives
(CD/DVD/BluRay™) and other accessories. Please note that some devices will use either
the older 4-pin Molex connectors, while others will use the newer 15-pin SATA
connector. 4-pin Molex connectors have two black wires, a yellow, and a red. The SATA
connector has an additional orange power wire.
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6. Connect your floppy drive (if present) using the supplied FDD connector shown in Table
2.
7. Connect an AC power cord to the power supply AC inlet. Turn the switch to the “|”
position after you have connected all the devices and are ready to turn on your
computer.
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Antec, Inc.
47900 Fremont Blvd.
Fremont, CA 94538
tel: 510-770-1200
fax: 510-770-1288
Antec Europe B.V.
Stuttgartstraat 12
3047 A Rotterdam
Netherlands
tel: +31 (0) 10 462-2060
fax: +31 (0) 10 437-1752
Technical Support:
US & Canada
1-800-22ANTEC
customersupport@antec.com
Europe
+49-40-226-139-2
europe.techsupport@antec.com
www.antec.com
© Copyright 2011 Antec, Inc. All rights reserved.
All trademarks are the property of their respective owners.
Reproduction in whole or in part without written permission is prohibited.
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