Nintendo released technical specifications of the Wii U hardware, noting that aspects are subject to change.[35]
Processors:
IBM Power-based multi-core 45 nm microprocessor[36]
Storage:
Internal flash memory expandable via SD memory card slot and USB slots (4) using a USB hard disk drive
Slot-loading disc drive compatible with 12-cm "proprietary high-density optical discs" and 12-cm Wii optical discs
Controller:
Built-in accelerometer, speakers, front-facing camera, microphone and a 6.2 inch touchpad
Two Circle Pads and one Digital Pad
Select, Start, Home and Power Buttons
A/B/X/Y front buttons, L/R bumper buttons and ZL/ZR trigger buttons
Video:
1080p, 1080i, 720p, 480p and 480i output
Compatible with HDMI, component, S-video and composite cables
Audio
AV Multi Out connector. Six-channel PCM linear output through HDMI