Computer Power Supply and Accessories
by Christopher Lee
A Power supply is needed to convert the alternating current (AC) into direct current (DC) in order to power the components inside a computer and decrease the voltage to a level suitable for them. While purchasing a power supply for your computer, these are some important points to consider:
Computer power supplies are rated in watts depending on their maximum power output. One must also realize that computers featuring multiple disk drives, powerful processors and high-end graphic cards demand higher wattage.
High mean time between failures (MTBF) indicates high-quality computer power supplies. Opting for poor quality may translate into a shortened life span of components.
Different processors, motherboards and expansion cards need different types of connectors. Modular devices would allow different connectors to be attached to or removed from the computer power supplies.
Computer power supplies with an 80 PLUS® certification save electricity during AC-to-DC conversion, thus indicating higher energy efficiency.
A laptop power cord is a quintessential accessory that helps supply power to your laptop computer. These are some of the factors that help you zone in on the best laptop power cord to purchase:
Laptop power cords are available in a range starting from economical, short-life ones to high-end, long-life ones that offer value-additions like warranty and replacement. The first pre-purchase step is to chart out a budget depending on your need.
Many of us assume that we must buy a laptop power cord from the computer’s manufacturer. However, the accessory market offers a range of universal, cost-effective laptop power cords. In fact, some of these varieties allow you to plug in other electronic appliances, too, so you may charge them and your laptop simultaneously. Understandably, these cost more than a basic laptop power cord, so you must decide whether or not you need to charge multiple appliances at the same time.
The biggest advantage of a laptop is its portability, so you may want a laptop power cord that offers this benefit. You may invest in either a separate travel charger or a kit that adapts to both stationary and travel.
Serial Advanced Technology Attachment (SATA) is a computer bus interface for connecting host bus adapters to mass storage devices. It offers the benefits of faster data transfer through higher signaling rates, more efficient transfer through an (optional) I/O queuing protocol, reduced cable bulk and cost and native hot swapping.
Although vendors boast a large variety of these adapters, there are a few important categories to be aware of:
Standard SATA power adapters are wafer-based with a wide 15-pin shape to prevent accidental misidentification and forced insertion of the wrong connector type.
The first slimline connector was featured on the SATA 2.6. This type of SATA power adapter is meant for smaller form factors such as the ones found in the optical drives of notebook computers.
SATA 2.6 also introduced the micro connector, meant for 1.8-inch (46 mm) hard drives.