Apple 661-5231 | Logic Board for MacBook Pro

1. Processor: Intel Core i5 or i7
2. Graphics: Integrated Intel HD Graphics 3000 or 4000
3. Memory: DDR3 SDRAM, up to 16GB
4. Storage: SATA hard drive or SSD, up to 1TB
5. Audio: Built-in stereo speakers, omnidirectional microphone, headphone port
6. Networking: Wi-Fi 802.11n, Bluetooth 2.1+EDR, Gigabit Ethernet
7. Ports: Thunderbolt port, FireWire 800 port, two USB 2.0 ports, SDXC card slot
8. Display: 13.3-inch or 15.4-inch LED-backlit display, up to 1680x1050 resolution
9. Battery: Built-in lithium-polymer battery, up to 7 hours of wireless web
10. Dimensions: 13.3-inch model: 12.78 x 8.94 x 0.95 inches, 15.4-inch model: 14.35 x 9.82 x 0.95 inches
11. Weight: 13.3-inch model: 4.5 pounds, 15.4-inch model: 5.6 pounds
12. Operating System: macOS

Notes:
1. This logic board is compatible with MacBook Pro models released in 2011.
2. It is not compatible with MacBook Pro models released in 2012 or later.
3. This logic board includes the processor, graphics, and memory, and is a crucial component for the proper functioning of the MacBook Pro.