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result in being unable to use the 4th PCI slot depending on the length of the card
used. Both HDD trays use soft silicone grommets to mount the HDD.
1. Remove the screw fastening the HDD tray to the case and slide the tray out
of the case.
2. Mount the hard drive into the drive tray through the bottom silicone
grommets with the special screws provided.
Note: Don’t over-tighten the screws. Over-tightening the screws will reduce
the vibration and noise-dampening ability of the silicone grommets.
3. Slide and fasten the tray back into the case.
4. Repeat the same procedure for the other as necessary.
5. Find a peripheral power molex connector on the power supply and connect it
to the male 4-pin or SATA connector on the device.
5.25” Device Installation
There are two external 5.25” drive bays (with one HDD tray inside the lower
5.25” bay). If you choose to use the lower drive bay for the HDD, you can only
install one 5.25” device to the case. Note: The 5.25” bay will not support devices
more than 6.9” deep.
1. Looking from the rear of the case you can see some metal grilles covering
the 5.25” drive bays. Carefully push a screwdriver through the metal grille
and gently push the plastic drive bay cover outwards until it comes off.
2. Use your hands to twist the metal plate back and forth until it breaks off. Be
careful of the newly exposed metal where the grille was attached, as these
areas are likely to be sharp.
Note: Don’t break off the metal grilles covering the drive bays that you are
not using.
3. Slide the 5.25” device into the bay from the front.
4. Fasten the 5.25” device into the drive bay with screws provided.
5. Repeat the same procedure for other devices.
6. Connect a 4-pin large white connector from the power supply to the male
4-pin connector on each of the devices.
Cooling System
The Rear Exhaust TriCool™ fan:
The NSK 3400 comes with one 120mm TriCool fan preinstalled. This fan has a
three-speed switch that lets you choose between quiet, performance, or maximum
cooling. (See specifications below.) The fan is installed so that the air is blowing
out of the case. 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 fan is Low. We recommend this speed for quiet
computing.
Note regarding using fan speed controllers with TriCool fans: The minimum
voltage to start the fan is 5V. We recommend setting 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 of Antec’s 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.
