Shop online for a power supply to meet the needs of each of the following systems. Print or save the webpage showing the power supply, its features, and its price:

1. A regular desktop system for light computing has a moderately priced motherboard and processor, onboard video, two SATA hard drives, a DVD-RW drive, and two case fans. The system needs a microATX power supply rated at least 450 W.
2. A file server has a high-end motherboard and processor using the LGA2011 socket, 8 modules of DDR4 RAM, onboard video, one SSD SATA hard drive, five magnetic SATA hard drives, DVD-RW drive, tape drive, PCI RAID card, and four fans. The system needs an ATX power supply rated at about 550 W.
3. A gaming system has a high-end motherboard and processor, two high-end video cards using SLI technology, two SATA hard drives, a Blu-ray drive, and four fans. The system needs an ATX power supply rated at about 800 W. The two high-end video cards require about 275 W each.
4. Suppose the gaming system in Number 3 is generating extra heat because of overclocking and a liquid cooling system has been installed. To account for the needs of the liquid cooling system, the power supply needs to be upgraded to 1800 W.