NSK2400 - Antec

New Solution Series 

NSK2400

At Antec, we continually refine and improve our products to ensure the highest 

quality. So it’s possible that your new case may differ slightly from the descriptions 

in this manual. This isn’t a problem; it’s simply an improvement. As of the 

date of publication, all features, descriptions, and illustrations in this manual are 

correct. 

Disclaimer 

This manual is intended only as a guide for Antec’s Computer Enclosures. 

For more comprehensive instructions on installing the motherboard and peripherals, 

please refer to the user’s manuals which come with the components and drives. 

New Solution Series User’s Manual 

NSK 2400 - Quiet Desktop Case 

The Power Supply 

NSK 2400 comes with a 380 Watt universal input, active PFC, single 80mm fan 

cooled power supply compatible with the ATX12V version 2.01 specification and 

above. This includes dual 12V output rails that deliver safer and more reliable 

output to the system’s components, as well as higher energy efficiency, which 

reduces power consumption by up to 25% saving you money on your electricity 

bill. In addition we’ve included a variety of industrial-grade protective circuitry: 

OPP (over power protection), OVP (over voltage protection), UVP (under voltage 

protection), and SCP (short circuit protection). 

The power supply comes with a main power switch. Make sure you turn the 

switch to the ON ( I ) position before you boot up the computer for the first time. 

Normally, you won’t need to switch to the OFF (O) position, since the power supply 

includes a soft on/off feature. This lets you turn the computer on and off by 

using the soft switch on the computer case. If the computer crashes and you can’t 

shut it down using the soft switch, you can switch the main power to the OFF (O) 

position to clear the fault, then reboot. 

This power supply model features Power Factor Correction (PFC) circuitry in accordance 

with European standard regulation code EN61000-3-2. By altering the input 

current wave shape, PFC improves the power factor of the power supply. This 

results in increased energy efficiency, reduced heat loss, prolonged life for power 

distribution and consumption equipment, and improved output voltage stability. 

Together with the high efficiency design and the quiet 80mm fan, the power supply 

delivers not only a cleaner but also a quieter operating environment. 

Setting Up 

1. Place the case upright on a flat, stable surface. 

2. Remove the thumbscrews from the back of the top panel. Slide the panel towards 

the rear to remove it from the case. 

3. Inside the case you should see the power supply, some wiring with marked 

connectors (USB, PWR etc.), and installed I/O panel and a power cord. 

1

The Triple Chamber structure 

Upon opening the top panel, you will find the case is divided into three separate 

chambers – the power supply chamber, the motherboard chamber and the HDD 

chamber. This triple chamber structure isolates heat and noise from each section 

resulting in much quieter and cooler operation than a traditional desktop case. 

Installing the Motherboard 

This manual does not cover CPU, RAM, or expansion card installation. Please consult 

the motherboard manual for specific mounting instructions and troubleshooting. 

The motherboard is located inside the main chamber with two 120 mm TriCool 

fans preinstalled right next to the CPU. 

1. Lay the case down, with the open side facing up. The drive cages and power 

supply should be visible. 

2. Make sure you have the correct I/O panel for the motherboard. If the panel 

provided with the case isn’t suitable, please contact the motherboard manufacturer 

for the correct I/O panel. 

3. Line up the motherboard with the standoff holes, and remember which holes 

are lined up. Not all motherboards will match with all the provided holes; this is 

normal, and won’t affect functionally. 

4. Remove the motherboard by lifting it up. 

5. Screw the brass standoffs into the threaded holes that line up with the motherboard. 

Do not overtighten the standoffs. Some standoffs may be pre-installed 

for your convenience. 

6. Place the motherboard on the brass standoffs. 

7. Attach the motherboard to the standoffs with the provided Philips-head 

screws. The motherboard is now installed. 

Connecting the Power and LED 

The power supply conforms to the ATX12V Version 2.01 standard. If the motherboard 

has a 20-pin power receptacle, detach the 4-pin attachment on the 24-pin 

power connector, see pictures 1 and 2. Before you connect the power supply to 

any of the devices, please consult the appropriate user manuals for the motherboard 

and other peripherals. 

1. Connect the 24-pin Main Power Connector and the 4- 

pin or 8-pin connector to the motherboard as needed. 

If the motherboard uses a 20-pin connector; detach 

the 4-pin attachment on the 24-pin power connector 

(see pictures 1 and 2). 

2. Connect the Reset switch (labeled RESET SW) to the 

motherboard at the RST connector. Make sure the 

label always faces the front of the case. 

Picture 1 Picture 2 

For 24-pin 

motherboards 

For 20-pin 

motherboards 

3. Power LED (labeled POWER LED) connector is located behind the Reset 

connector. 

4. Power Switch (labeled POWER SW) connects to the PWR connector on the 

motherboard. 

5. Hard Drive LED (labeled H.D.D. LED) connects to the IDE connector. 

2

Connecting the USB Ports 

You will find a single 10-pin connector on a cable attached to the front USB ports. 

This is an Intel standard connector, which is keyed so that it can’t be accidentally, 

reversed as long as it is connected to a proper Intel standard motherboard header. 

Connect the 10-pin connector to the motherboard headers so that the blocked pin 

fits over the missing header pin. 

Note: Please check the motherboard manual for the USB header pin layout and 

make sure it matches the attached table. If it does not match this Intel standard, 

please call Antec customer support at (800) 22ANTEC (North America) or at 

+31 (0) 10 462-2060 (Europe) to buy a USB adapter. This adapter will allow you 

to connect the front USB to the motherboard on a pin-by-pin basis. 

Motherboard Pin Layout 

1 2 

9 

10 

Pin Signal Names Pin Signal Names 

1 USB Power 1 2 USB Power 2 

3 Negative Signal 1 4 Negative Signal 2 

5 Positive Signal 1 6 Positive Signal 2 

7 Ground 1 8 Ground 2 

9 Key (No Connection) 10 Empty Pin 

Connecting the Audio Ports 

There is an Intel standard 10-pin connector (with 7 individual wires with connectors) 

coming out from the front panel speaker and microphone connection. If the 

motherboard supports Intel’s standard onboard audio connector, you can plug in 

the 10-pin connector directly onto the board. For non-Intel standard audio connection, 

you need to plug the 7 individual connectors to the motherboard. See instruction 

below: 

Locate the internal audio connectors from the motherboard or sound card. Consult 

the motherboard or sound card manual for the pin-out positions. 

1. Microphone Signal Pin: Connect the MIC connector to this pin. 

2. Microphone Power: Connect the MIC-BIAS connector to this pin. 

3. Ground Pin: Connect the AUD GND connector to this pin. 

4. Front Right Speaker Out Pin: Connect the FPOUT-R connector to this pin. 

5. Front Left Speaker Out Pin: Connect the FPOUT-L connector to this pin. 

6. Rear Right Speaker Out Pin: Connect the RET-R connector to this pin. 

7. Rear Left Speaker Out Pin: Connect RET-L connector to this pin. 

3

Hard disk Drive Installation 

There is a hard disk drive bracket with soft silicone grommets inside the HDD 

chamber which can hold two hard drives. 

1. Remove the HDD bracket from the chamber by 

removing the four screws on top of it. 

2. Mount the left side of the hard drives (facing from 

the front of the hard drive) onto the drive bracket 

through the top silicone grommets with the special 

screws provided. (See picture 3) Note: Don’t overtighten 

the screws. Over-tightening the screws will 

reduce the vibration and noise-dampening ability of 

the silicone grommets. 

3. Place the HDD/bracket assembly back into the 

Picture 3 

case. Each hard drive should rest on two soft 

silicone grommets preinstalled at the bottom of the 

case. It is optional, but not necessary to attach the hard drives with screws 

through the bottom grommets. 

4. Fasten the bracket using the screws provided. 

5. Find a 4-pin Molex or a SATA connector on the power supply and connect it to 

the power connector on the device. 

5.25” Device Installation 

NSK 2400 incorporates a rapid-release Flip Up Drive Cage inside the power supply 

chamber for easy drive installation. The cage can hold two 5.25” devices. 

To install an external 5.25” device: 

1. Remove the flip-up drive cage. 

2. Remove the drive bay cover you intend to 

install the device. 

3. Insert the 5’25” device into the cage. 

Fasten the drive with the screws included. 

(See Picture 4) 

4. Find a 4-pin Molex or a SATA connector on 

the power supply and connect it to the power 

connector on the device. 

Picture 4 

Cooling System 

The 120 mm TriCool fans 

The NSK 2400 comes with two 120mm TriCool fans preinstalled. These fans sit 

right next to the CPU and are installed so that the air is blowing out of the case. 

Please leave at least 1” (2.5cm) between the right side of the case and anything 

that would block the exhaust from these fans. Failure to do so may cause the 

chamber or CPU to overheat. 

These fans have a three-speed switch that lets you choose between quiet, performance, 

or maximum cooling. (See specifications below.) Connect a large 4-pin 

connector from the power supply to the male 4-pin connector on the fan. 

Note: The default setting of the fans is Low. We recommend this speed to maximize 

quiet computing. 

4

Note regarding fan speed controllers: The minimum voltage to start the fan is 

5V. We recommend our users set the fan speed to High if the fan will be connected 

to a fan control device or to the Fan-Only connector found on some Antec 

power supplies. A fan-control device regulates the fan speed by varying the voltage 

to it. The voltage may start as low as 4.5V to 5V. Connecting a TriCool set 

on Medium or Low to a fan-control device may result in the fan not being able 

to start. The already lowered voltage from the fan control device will be further 

reduced by the TriCool circuitry below 5V. 

Specifications: 

Size: 

120mm x 120mm x 25.4mm 

Rated Voltage: 

DC 12V 

Operating Voltage: 10.2V ~ 13.8V 

Speed 

Input 

Current 

Air Flow 

Static 

Pressure 

Acoustical 

Noise 

Input 

Power 

High 

2000 RPM 

0.24A 

(Max.) 

2.24 m³ / min 

(79 CFM) 

2.54 mm-H2O 

(0.10 inch-H2O) 

30 dBA 2.9 W 

Medium 

1600 RPM 

0.2A 1.59 m³ / min 

(56 CFM) 

1.53 mm-H2O 

(0.06 inch-H2O) 

28 dBA 2.4 W 

Low 

1200 RPM 

0.13A 1.1 m³ / min 

(39 CFM) 

0.92 mm-H2O 

(0.04 inch-H2O) 

25 dBA 1.6 W 

5

The Bottom Air Intake 

There are intake vents at the bottom of the case right under the HDD chamber. 

Fresh cool air will flow through the vents through the hard drives, and then flow 

into the motherboard chamber and exhaust by the two 120mm TriCool fans. 

Note: Do not place the NSK2400 on a soft surface or over anything that will block 

the bottom air vents. 

The Upper Air Intake 

There are vents on the top panel above the PCI expansion slots. Fresh air will flow 

through it into the motherboard chamber to cool the hottest VGA card. 

Note: Do not place anything on top of the NSK2400 that will block the top air 

vents. 

The Rear Air Intake 

There are vents right above the rear I/O panel and on the PCI expansion slot covers 

to bring in fresh air to help cool the CPU and VGA card. 

CPU Air Guide 

The CPU Air Guide, and rear air intake work together to provide fresh air to the 

CPU cooler to enhance the CPU cooling. The CPU Air Guide consists of several 

sections which can be adjusted to best suit each individual motherboard CPU position. 

The Power Supply Air Intake 

There are vents on the left side of the case to bring fresh air into the power supply 

chamber to cool the power supply. 

Note: Please leave at least 1” (2.5cm) between the left side of the case and 

anything that could block airflow to the power supply. This is required so that the 

power supply will have sufficient cooling. 

6

Antec, Inc. 

47900 Fremont Blvd. 

Fremont, CA 94538 

USA 

tel: 510-770-1200 

fax: 510-770-1288 

Antec Europe B.V. 

Sydneystraat 33 

3047 BP Rotterdam 

The Netherlands 

tel: +31 (0) 10 462-2060 

fax: +31 (0) 10 437-1752 

Technical Support: 

US & Canada 

1-800-22ANTEC 

customersupport@antec.com 

Europe 

+31 (0) 10 462-2060 

europe.techsupport@antec.com 

www.antec.com 

© Copyright 2006 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. 

Printed in China. 

Version 1.0.1 02/16/2006

NSK2400 - Antec

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