iMac9,1

iMac (20-inch, Mid 2009)iMac2009EFI 64-bitno security chip

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iMac9,1 9400M · 20-inch · Early 2009 9400M · 24-inch · Early 2009 GT 120 · 24-inch · Early 2009 GT 130 · 24-inch · Early 2009 HD 4850 · 24-inch · Early 2009 9400M · 20-inch · Mid 2009 0 of 6 configurations tested Cards Matrix

Criterion	9400M · 20-inch · Early 2009	9400M · 24-inch · Early 2009	GT 120 · 24-inch · Early 2009	GT 130 · 24-inch · Early 2009	HD 4850 · 24-inch · Early 2009	9400M · 20-inch · Mid 2009	Config count
Boot · a failure here makes a config Unsupported 0 of 18 passed
Stock installer boots via 64-bit EFI	Untested	Untested	Untested	Untested	Untested	Untested	6
Internal storage detected and installation completes	Untested	Untested	Untested	Untested	Untested	Untested	6
Installed system starts, restarts and shuts down cleanly	Untested	Untested	Untested	Untested	Untested	Untested	6
Graphics 0 of 12 passed
Integrated GPU acceleration	Untested	Untested				Untested	3
Discrete GPU acceleration			Untested	Untested	Untested		3
External display output	Untested	Untested	Untested	Untested	Untested	Untested	6
Display 0 of 12 passed
Internal display at native resolution	Untested	Untested	Untested	Untested	Untested	Untested	6
Display brightness control	Untested	Untested	Untested	Untested	Untested	Untested	6
Input 0 of 6 passed
IR receiver (Apple Remote)	Untested	Untested	Untested	Untested	Untested	Untested	6
Power 0 of 6 passed
Sleep and wake	Untested	Untested	Untested	Untested	Untested	Untested	6
Audio 0 of 36 passed
Built-in speakers	Untested	Untested	Untested	Untested	Untested	Untested	6
Built-in microphone	Untested	Untested	Untested	Untested	Untested	Untested	6
Headphone / analog audio output	Untested	Untested	Untested	Untested	Untested	Untested	6
Line-in / analog audio input	Untested	Untested	Untested	Untested	Untested	Untested	6
Optical digital audio output	Untested	Untested	Untested	Untested	Untested	Untested	6
Optical digital audio input	Untested	Untested	Untested	Untested	Untested	Untested	6
Camera 0 of 6 passed
Built-in webcam	Untested	Untested	Untested	Untested	Untested	Untested	6
Networking 0 of 18 passed
Wi-Fi	Untested	Untested	Untested	Untested	Untested	Untested	6
Bluetooth	Untested	Untested	Untested	Untested	Untested	Untested	6
Ethernet	Untested	Untested	Untested	Untested	Untested	Untested	6
Ports 0 of 12 passed
USB-A ports	Untested	Untested	Untested	Untested	Untested	Untested	6
FireWire	Untested	Untested	Untested	Untested	Untested	Untested	6
Storage 0 of 6 passed
Internal optical drive reads discs	Untested	Untested	Untested	Untested	Untested	Untested	6
Thermal 0 of 12 passed
Temperature sensors report under load	Untested	Untested	Untested	Untested	Untested	Untested	6
Fans respond to load	Untested	Untested	Untested	Untested	Untested	Untested	6

Research notes (unverified)

Early 2009 (20- and 24-inch) and the Mid 2009 20-inch education model share this identifier.
Audio is a Realtek ALC889A codec on every observed machine.

Sources (10) and identifiers

Board IDs: Mac-F2218EA9, Mac-F2218EC8, Mac-F2218FA9, Mac-F2218FC8