IBM 19V 4.2A
Model: CAU-IB07420A
Power: 80W
Input: DC 12V (8.5A Max)
Output:  19V 4.2A.
USB output: 5V 2.1A (10.5W Max)

Tip size: 5.5*2.5*12mm
IBM 20V 3.25A
Model: CAU-IB09325A
Power: 65W
Input: DC 12V (8.5A Max)
Output:  20V 3.25A
USB output: 5V 2.1A (10.5W Max)

Tip size: 7.9*5.4*12mm with pin
IBM 20V 4.5A
Model: CAU-IB09450A
Power: 90W
Input: DC 12V (8.5A Max)
Output:  20V 4.5A
USB output: 5V 2.1A (10.5W Max)

Tip size: 7.9*5.4*12mm with pin
Lenovo 20V 3.25A
Model: CAU-LE09325A
Power: 65W
Input: DC 12V (8.5A Max)
Output: 20V 3.25A
USB output: 5V 2.1A (10.5W Max)

Tip size: 7.9*5.4*12mm with pin
Lenovo 20V 4.5A
Model: CAU-LE09450A
Power: 90W
Input: DC 12V (8.5A Max)
Output: 20V 4.5A
USB output: 5V 2.1A (10.5W Max)

Tip size: 7.9*5.4*12mm with pin
Lenovo 20V 2.5A
Model: CAU-LE09225A
Power: 50W
Input: DC 12V (8.5A Max)
Output: 20V 2.5A
USB output: 5V 2.1A (10.5W Max)

Tip size: USB Connector
Lenovo 20V 3.25A
Model: CAU-LE09325C
Power: 65W
Input: DC 12V (8.5A Max)
Output: 20V 3.25A
USB output: 5V 2.1A (10.5W Max)

Tip size: USB Connector
Lenovo 20V 4.5A
Model: CAU-LE09450C
Power: 90W
Input: DC 12V (8.5A Max)
Output: 20V 4.5A
USB output: 5V 2.1A (10.5W Max)

Tip size: USB Connector
Lenovo 20V 3.25A
Model: CAU-LE09325B
Power: 65W
Input: DC 12V (8.5A Max)
Output: 20V 3.25A
USB output: 5V 2.1A (10.5W Max)

Tip size: 5.5*2.5*12mm