Generic Universal 5.5x2.1mm Jack to 28 Plug Power Adapter for Notebook 28 DC

Used for external power source and on-board transformer 
1 set Multi-function DC Plugs for AC Power Adapter Notebook
Laptop Universal 5.5x2.1mm Jack to 28 Plugs 
Plug male diameter outside/inside(or pin) 
1: 7.9mmx1.0mm 
2: 7.4mmx1.0mm round 
3: 7.4mmx1.0mm octahedron 
4: 6.0mmx3.0mm
  5: 6.0mmx1.0mm 
6: 5.5mmx2.5mm 
7: 5.5mmx2.5mm 
8: 5.5mmx2.5mm 
9: 5.5mmx2.1mm 
10: 5.5mmx2.1mm 
11: 5.5mmx2.1mm 
12: 5.5mmx1.7mm 
13: 5.0mmx2.5mm 
14: 5.0mmx2.1mm 
15: 5.0mmx1.0mm 
16: 5.0mmx1.0mm 
17: 4.8mmx1.7mm 
18: 4.8mmx1.7mm 
19: 4.0mmx1.7mm 
20: 3.5mmx1.35mm 
21: 3.0mmx1.0mm 
22: 2.5mmx0.7mmx10mm 
23: 2.5mmx0.7mmx8mm 
24：for apple 
25: 4pin female 
26: 3pin female 
27: 3.5mm mono plug 
28: 2.5mm mono plug 
includes 28 x Adapters