![Macpro 3.1 early 2008. Anybody has an idea of what that button is and the 2 contact points next to it? Strange enough my mac pro won turn on unless i keep Macpro 3.1 early 2008. Anybody has an idea of what that button is and the 2 contact points next to it? Strange enough my mac pro won turn on unless i keep](https://i.redd.it/n23e6ubnjqp61.jpg)
Macpro 3.1 early 2008. Anybody has an idea of what that button is and the 2 contact points next to it? Strange enough my mac pro won turn on unless i keep
![University setup; Mac Pro 5,1 (flashed 4,1) and 15-inch MacBook Pro Early 2008, both running Mojave : r/mac University setup; Mac Pro 5,1 (flashed 4,1) and 15-inch MacBook Pro Early 2008, both running Mojave : r/mac](https://i.redd.it/vzwzy8ff3gd61.jpg)
University setup; Mac Pro 5,1 (flashed 4,1) and 15-inch MacBook Pro Early 2008, both running Mojave : r/mac
![APPLE MAC PRO 3.1 early 2008 16gb ram 2x2.8 GHz quad core intel xeon with extras £60.00 - PicClick UK APPLE MAC PRO 3.1 early 2008 16gb ram 2x2.8 GHz quad core intel xeon with extras £60.00 - PicClick UK](https://www.picclickimg.com/qKMAAOSw3h9gYyzZ/Apple-mac-pro-31-early-2008-16gb-ram.webp)
APPLE MAC PRO 3.1 early 2008 16gb ram 2x2.8 GHz quad core intel xeon with extras £60.00 - PicClick UK
![MAC PRO (Early 2008); 2 x Xeon Quad Core, 2.8 GHz, HDD: 500 GB, RAM: 8 GB, unitate optica: DVD RW, video: ATI Radeon HD 2600 XT MAC PRO (Early 2008); 2 x Xeon Quad Core, 2.8 GHz, HDD: 500 GB, RAM: 8 GB, unitate optica: DVD RW, video: ATI Radeon HD 2600 XT](https://www.pcmadd.com/media/catalog/product/cache/1/image/600x600/9df78eab33525d08d6e5fb8d27136e95/4/s/4susvj0.jpg)
MAC PRO (Early 2008); 2 x Xeon Quad Core, 2.8 GHz, HDD: 500 GB, RAM: 8 GB, unitate optica: DVD RW, video: ATI Radeon HD 2600 XT
![Apple Mac Pro 3.1 Early 2008 with Cinéma Display, Keyboard, Mouse - Computer - Fără cutia originală - Catawiki Apple Mac Pro 3.1 Early 2008 with Cinéma Display, Keyboard, Mouse - Computer - Fără cutia originală - Catawiki](https://assets.catawiki.nl/assets/2023/9/24/d/d/a/dda0d533-50a6-4bbc-9a1e-15fb6b6d5961.jpg)
Apple Mac Pro 3.1 Early 2008 with Cinéma Display, Keyboard, Mouse - Computer - Fără cutia originală - Catawiki
![MAC PRO (Early 2008); 2 x Xeon Quad Core, 2.8 GHz, HDD: 500 GB, RAM: 8 GB, unitate optica: DVD RW, video: ATI Radeon HD 2600 XT MAC PRO (Early 2008); 2 x Xeon Quad Core, 2.8 GHz, HDD: 500 GB, RAM: 8 GB, unitate optica: DVD RW, video: ATI Radeon HD 2600 XT](https://www.pcmadd.com/media/catalog/product/cache/1/image/600x600/9df78eab33525d08d6e5fb8d27136e95/m/a/mac-pro-2009-open.jpg)