DC Jack for Laptop Asus A52 K50 K52 K53 X52 X53 

DC connector: 5.5mm x 2.5mm

Compatible models
Asus
Asus: A52, A53, A54
ASUS - K: K50, K52, K53
N [eng]: N75
ASUS - X: X52, X53, X54

FUJITSU SIEMENS
Amilo A: A1640, A1645, A1667, A7640, A7645
Amilo 1xxx: Li1818, V2020, Pi1505, V2040, Pi1536, Pi1510, V2060, V3405, Pi2512, Pi2515, Pi2530, V5505, V6505, Pi2540, Pi2550, V6535, V6545
Amilo M: M1405, M1436, M3438, M4438, M7405
Amilo Ui: Ui3520

HP COMPAQ
Compaq NC: NC8000
Compaq NW: NW8000

IBM Lenovo
ThinkPad X: X40, X41, X42, X43, X45