Power Supply
The power supply included with the Cavalier 2 case is a proprietary Macron 300-watt PS2 switching power supply (MPT-301). It is narrower than a standard ATX unit, which means it cannot be easily replaced with a different power supply of your choice.
I evaluated the Macron 300 power supply on both features and performance. A full range of equipment was used to test the power supply under controlled load conditions (263 watt). In addition to measuring the power going in and coming out I looked at voltage regulation, electrical noise (AC ripple), airflow, sound level, efficiency and cost.
The Macron 300 PSU comes with a full compliment of drive connectors. The wiring harnesses all measure approximately 15′ long to the first connector and the main 20-pin ATX connector cable is covered with black plastic mesh sleeving.
· (1) ATX Main motherboard connector (20 pins)
· (1) 12V Power connector — Pentium 4 (4 pins)
· (4) Peripheral HDD connectors (4 pins)
· (2) Peripheral FDD connector (4 pins)
· (2) Serial ATA power connectors (15 pins)
Overall the power supply tested well with good rail voltages and excellent line regulation. The efficiency was average and the power factor was rather low.