Provide the following information for the following HP Elitebook:
- Specifications
- Best Use case for
- Release date
- Image Url
- Why reccomended
1. HP ELITEBOOK 840 G1
2. HP ELITEBOOK 840 G2
3. HP ELITEBOOK 840 G3
4. HP ELITEBOOK 840 G4
5. HP ELITEBOOK 840 G5
6. HP ELITEBOOK 840 G6
7. HP ELITEBOOK 820 G1
8. HP ELITEBOOK 820 G2
9. HP ELITEBOOK 820 G3
10. HP ELITEBOOK 820 G4
11. HP ELITEBOOK 850 G1
12. HP ELITEBOOK 850 G2
13. HP ELITEBOOK 850 G3