The Adapter is rated at 45W and is of small pin (4.5mm) configuration. It delivers 19.5V, 2.31A output power with frequency of 50/60 Hz and supports 100-240V of input power.
Compatible part number for the adapter are : 04H6VH 4H6VH DA45NM131 ADP-45XD BA D0KFY 3RGOT JHJX0 LA45NM131 CDF57 0CDF57 JT9DM 0X9RG3 332-1827 AA45NM131 03RG0T R5Y39.