Laptop and desktop computers use the same types of ports so that peripherals can be interchangeable. These ports are specifically designed for connecting peripherals.

The placement of ports, connections, and drives is unique because of the compact design of a laptop. Ports, connections, and drives are located on the exterior of the laptop, in the front, back, and side panels. Some laptops contain PC Card or ExpressCard slots to add functionality, such as removable memory cards, a modem, or a network connection.

Laptops require a port for external power. Laptops can operate using either a battery or an AC power adapter. You can use this port to power the computer or to charge the battery.

Status indicators, ports, slots, connectors, bays, jacks, vents, and a keyhole are on the exterior of the laptop.

Figure 1 shows three LEDs on the top of the laptop.

NOTE: LED displays vary among laptops. Consult the laptop manual for a list of specific status displays.

Figure 2 shows three components on the back of the laptop.

A laptop operates using either a battery or an AC power adapter. Laptop batteries are manufactured in various shapes and sizes. They use different types of chemicals and metals to store power. Figure 3 compares rechargeable batteries.

The left side of the laptop shown in Figure 4 has 10 components.

A security keyhole enables a user to connect a laptop to a stationary location, such as a desk, by using a combination or keyed lock, as shown in Figure 4.

The front of the laptop is shown in Figure 5.

The right side of the laptop is shown in Figure 6.

The bottom of the laptop is shown in Figure 7.