IDENTIFYING COMPUTER PARTS AND ITS PERIPHERAL DEVICES

LAN CARD – A network interface card, network adapter, network interface controller (NIC), or LAN adapter is computer hardware component designed to allow computers to communicate over a computer network.

MOTHERBOARD – A motherboard is a central printed circuit board (PCB) in many modern computers and holds many of crucial components of the system, while providing connectors for other peripherals.

RAM – Random Access Memory, the most common computer memory which can be used by programs to perform necessary tasks while the computer is on.

HARD DISK – a HARD DISK DRIVE (often shortened as hard disk, hard drive, or HDD) is a non-volatile storage device that stores digitally encoded data on rapidly rotating rigid (i.e. hard) platters with magnetic surfaces.

VIDEO CARD – a video card, video adapter, graphics-accelerator card, display adapter or graphics card is an expansion card whose function is to generate and output images to a display

AGP vs PCI-E
The Accelerated Graphics Port (often shortened to AGP) is a high-speed point-to-point channel for attaching a video card to a computer's motherboard, primarily to assist in the acceleration of 3D computer graphics.

PCI Express (Peripheral Component Interconnect Express) is a high-speed serial computer expansion bus standard designed to replace the older PCI, PCI-X, and AGP bus standards

POWER SUPPLY UNIT- is the component that supplies power to the other components in a computer.

Serial ATA (SATA) data cable  is a computer bus interface for connecting host bus adapters to mass storage devices such as hard disk drives and optical drives. 

SATA Power Connector is a power cable for SATA devices such as (HDD)hard disk drives and (ODD) optical disk.