Connectivity

• ethernet [physical connection]
• bluetooth [short range; low power; secure]
• wifi
• Global Positioning Satellite [GPS; triangulation to find location]
• Universal Serial Bus [USB; ]
• SATA

Wired connections:

• Faster and more robust than wireless connections.
• Secure.
• Easy to install/ troubleshoot.
• No extra 'wireless' equipment needed.
• Inflexible when repositioning is concerned.
• Inconvenient for laptop/mobile phone users.
• Usually, doesn't support as many connections (4 instead of 20).

Wireless connections:

• One can connect where ever.
• Ideal for laptop/mobile phone users.
• With high encryption, very secure.
• Slower than wired connections.
• Unauthorised users.

SATA

Serial Advance Technology Attachment.

Wired host of buses connecting mass storage devices.

Cheaper than wireless connection.

PATA

Parallel Advance Technology Advancement.

Wired host of buses connecting mass storage devices, ie optical drive.

Faster than SATA.

Bluetooth

Short range standard for interconnected mobile devices.

Doesn't need a clear line of sight.

Simple to use.

Slower than Infrared (1Mbps < 4Mbps).

NFC

Near Field Communication

Convenient and intuitive.

Secure (credit cards can be stolen).

Versatile.

Companies need to integrate it into their products.

Computer hacking.