Hardware

Based on commercially available systems.
Overall view.
[14 minutes] CompTIA A+ 220-601: 1.1 - Introduction to CPUs
[07 minutes] Motherboard Chipsets - CompTIA A+ 220-801: 1.2
[10 minutes] Understanding PC Memory - CompTIA A+ 220-801: 1.3
[13 minutes] An Overview of PC Memory Types - CompTIA A+ 220-801: 1.3
[08 minutes] Motherboard RAM Slots - CompTIA A+ 220-801: 1.2
[17 minutes] Motherboard Expansion Slots and Bus Speeds - CompTIA A+ 220-801 1.2
[06 minutes] CPU Sockets - CompTIA A+ 220-801: 1.2
[05 minutes] Motherboard Jumpers and Connectors - CompTIA A+ 220-801: 1.2

General Interest
[05 minutes] How Flash Memory Works