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System specs
Central Processing Unit (CPU)
IBM Broadway 729MHz
Graphics Processing Unit (GPU)
ATI Hollywood 243MHz
Supported Resolution
Up to 480p
System Memory
88MB
Internet Connectivity
WiFi 802.11 b/g

Media
Internal Storage
512MB Flash Memory
Optical Drive
12cm Wii Disc & 8cm GameCube Disc. Discs will self-load into the bay.
12cm Disc Capacity
4.7Gb (or 8.5Gb Dual Layer)
Memory Expansion
1 x SD Memory

Backward Compatibility
Downloadable Games
NES, SNES, N64, Genesis, Neo-Geo, TurboGrafix16 (and CD)
Disc Compatibility
GameCube

Connectivity
Wii Controller Ports
4 x Wireless
GameCube Controller Ports
4 Ports
GameCube Memory Expansion
2 Ports
USB 2.0
2 Ports
Internet
Wireless IEEE802.11b/g or a USB LAN adaptor. WiiConnect 24 persistant connection, even when powered off.
Output ports
AV Multi-output port, allowing Composite, S-Video and Component.

Controller
Connection method
Bluetooth (wireless)
Wiimote Buttons
3 axis motion sensor, + Direction pad, A, B, Minus, Home, Power button, 1 and 2
Nunchuck Buttons
3 axis motion sensor, Analog stick, C and Z
Force feedback (rumble)
Yes

Other features
Wiimote has a speaker and an expansion port