Apart from its fans, this power supply is designed in quite an ordinary manner and differs but little from its predecessor. The additional active PFC card on the left makes a difference, though. The main regulator is based on a SG6105D chip; the PFC device is based on a UCC3818N.

By the way, the first of the blinking LEDs resides on the card with the active PFC device.

Besides some screws and a power cord, the box with the power supply also contains a device to control the speed of the PSU fans. This device is to be installed into a 3.5” bay of your system case.

It can change the speed of the back-panel fan only. The other knob is meant to control the speed of one of the system fans; the system fan must be made by Thermaltake and must support such speed management.

Realizing that users may not like the necessity to look for for a specific fan to use with the speed management device, Thermaltake includes one with the PSU. This is not a regular fan, but an X-Blower that occupies a standard 80x80mm seat.

As I said above, the W0020 complies with the ATX12V 1.3 standard and differs little from the W0009 model. Its maximum load on the +12V rail is only 18A.

The PSU is equipped with the following cables and connectors:

• One cable with a 20-pin ATX connector (52cm, 16AWG wires)
• One cable with a 4-pin ATX12V connector (52cm, 16AWG wires)
• Two cables with three Molex connectors and one floppy mini-plug on each (52cm from the PSU case to the first connector and 20cm more to each next connector; 16AWG wires)
• One cable with three Molex connectors (52cm+20cm+20cm, 16AWG wires)
• One cable with two SATA power connectors (51cm+20cm, 16AWG wires)
• A cable for fan speed management; the speed is changed with the included device and is monitored through the mainboard