Lesson 1 - Laptop Hardware
🖥️ What Laptop Hardware Is
● Laptop hardware is engineered into a compact, battery-powered portable system.
● Repair/upgrading challenges are greater than those for desktops due to small form
factors and unique layouts.
● The details of accessing components vary significantly between manufacturers.
🔋 Laptop Batteries
● Provides primary power when the laptop is unplugged.
● Can be either user-removable or built-in (requires teardown).
● Common battery technologies:
○ Lithium-Ion (Li-ion)
○ Lithium-Ion Polymer (LiPo)
● These battery types don’t have “memory effect” (you can recharge at any state of
charge).
● Battery form factors and capacities differ by model; not interchangeable between
devices.
⌨️ Laptop Keyboard & Keycaps
● The keyboard is one of the most-used components.
● Typical laptop keyboard features:
○ Compact design with special keys (e.g., Fn, function keys).
○ Often connected via a single ribbon cable.
○ Some keyboards are easy to remove; others require partial disassembly.
● Keycap replacement is delicate — follow manufacturer instructions to avoid
damaging clips or switches.
● An external USB keyboard can be used as a temporary replacement or diagnostic
tool.
💾 Memory (RAM)
● Laptops use SO-DIMM memory modules (smaller than desktop DIMMs).
● Some laptops allow easy memory upgrades; others have soldered RAM that cannot
be replaced.
● Memory modules typically lock into place with clips in the slot.
📀 Storage Devices
● Common storage types:
○ Hard Disk Drives (HDDs) – older, mechanical, slower.
○ Solid-State Drives (SSDs) – faster, more reliable, no moving parts.
● Laptops may use different SSD form factors:
○ 2.5-inch SATA SSD (similar to HDD size).
○ M.2 SSD (plug-in module on motherboard).
● Upgrading to an SSD is a common performance improvement.
● Imaging or Cloning Software can be used to migrate data. (3rd party or even SSD
Manufacturer provides the software).
📷 Built-In Features and Peripherals
● Most laptops include:
○ Webcam for video capture.
○ Microphone for audio recording and calls.
○ Wireless radios (Wi-Fi, Bluetooth) for network connectivity.
📡 Wireless Connectivity (Laptop Hardware)
Wi-Fi
● Laptops include an internal Wi-Fi adapter for wireless network access.
● Uses IEEE 802.11 standards (e.g., a/b/g/n/ac/ax). - Mini PCI / Mini PCI Express
● Wi-Fi antennas are built into the laptop chassis, often routed around the display
bezel for better signal strength.
● Main and AUX Connections. 3rd antenna for Bluetooth.
● The Wi-Fi adapter may be:
○ Integrated into the motherboard, or
○ A replaceable internal card (common in older/modular laptops).
● Antenna cables are thin and fragile — easy to damage during repairs.
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