I currently own my 4th Surface 3. The prior three all had different manufacturing defects. First, the keyboard stopped connecting. Microsoft replaced the device. Then the audio jack stopped working on the replacement. Microsoft replaced the Surface 3 again. Then the AC plug stopped working. Microsoft again replaced the Surface 3. Now the audio has again stopped working on this device. Each time a device stopped working, I implemented the troubleshooting and on-line support steps recommended by Microsoft Support, none of which fixed the defect. I'M FED UP WITH THE POOR QUALITY OF THE MICROSOFT SURFACE 3. Microsoft has been very accommodating in providing a replacement Surface 3 but the lost productivity is unacceptable. Microsoft has refused to upgrade the device. Microsoft has lost my business.