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Front TriCool™ LED Intake Fans:
The Twelve Hundred V3 comes with three 120 x 25 mm TriCool™ blue LED fans which are pre-installed in
front of each HDD cage to cool the hard drives. These fans are installed so the air will be blown into the
case. Each fan comes with a speed control knob at the front of the faceplate. Turn the knob clockwise
to increase the speed. The lowest speed is 1200 rpm while the highest speed is 2000 rpm. See the
following chart to get appropriate specification.
Rear TriCool™ LED Exhaust Fan
There are two 120 x 25 mm TriCool™ blue LED fans preinstalled at the rear of the case. The fans are
installed so the air will be blown out of the case. Each fan has a three-speed switch that lets you choose
between quiet, performance, or maximum cooling. These switches are located at the rear of the case.
The default fan speed setting is Low.
120 mm Fan Specifications:
Size: 120 x 25 mm TriCool™ Fan
Rated Voltage: 12V DC
Operating Voltage: 10.2V ~ 13.8V
Note: The minimum voltage to start a 120 mm TriCool™ fan is 5V. We recommend that you set the fan
speed switch to High if you choose to connect the fan(s) 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, which may start as low as 4.5V to 5V. Connecting a TriCool™ fan set on Medium or Low to a
fan-control device may result in the fan not being able to start because the already lowered voltage
from the fan control device will be further reduced by the TriCool™ circuitry below 5V.
Side Panel 120 mm Fan Slot
The side fan opening is there to enhance graphics card cooling. Just snap a fan into the bracket on the
side panel so that it blows air into the case.
Middle 120 mm Fan Bracket
The middle fan is designed to cool the CPU, graphics card or the power supply, depending on which
drive bays you install the HDD cage into. You can use the middle fan on any drive cage you do NOT
install hard drives in. This design is especially useful in cooling dual graphics card implementations.
1. To remove the black middle fan mount, press in on the clips that secure the bay to its cage.
2. Place a 120 mm fan inside the mount and press it into place so that the holes in the fan are secured to
the mount.
3. Use the long screws provided to secure the fan to the mount. Do not overtighten.
4. Run the power (and control switch if using a TriCool™ fan) through the cable guide that runs along the
side of the fan mount.
5. Clip the assembly onto the back of an empty HDD cage.
6. Connect the fan to the power supply.