I am looking for the model release date & Dell support end date for the below hardware models and also whether Dell supports installing Windows 8.1 64 bit on the same, please suggest from where can I get this information:
| Latitude D420 |
| Latitude D430 |
| Latitude D620 |
| Latitude D630 |
| Latitude E4200 |
| Latitude E4300 |
| Latitude E5400 |
| Latitude E6220 |
| OptiPlex 330 |
| OptiPlex 745 |
| OptiPlex 755 |
| OptiPlex 760 |
| OptiPlex 780 |
| OptiPlex GX520 |