Macintosh 512K
（重定向自Fat Mac）
![](/Images/godic/202501/12/Macintosh_512K1023.png")
![Mac 512K back panel](/Images/godic/202501/12/Mac512KBackFixed_wb1023.jpg")
![Mac 512K with accessories](/Images/godic/202501/12/Mac512K_wb1023.jpg")
The Macintosh 512K Personal Computer is the second of a long line of Apple Macintosh computers, and was the first update to the original Macintosh 128K. It was virtually identical to the previous Mac, differing primarily in the amount of built-in memory (RAM).