DK138 laptop part:
DELL Slim Auto-Air AC Adapter Pa-12

This is a Brand New DELL Original 65-watt Slim Auto-Air AC Adapter for Dell Notebooks: Includes DC automobile cigarette lighter adapter and black carrying case. The Dell Combination Power Adapter supports Latitude ExpressCharge for charging your battery quickly on most of the Latitude D-Family.
(NOTE: ExpressCharge is not supported on Latitude D800, Inspiron 8500 and Dell Precision M60.)

Compatible Notebook Models:

Inspiron: 1420, 1501, 1520, 1521, 1525,1526, 1720, 1721, 630m, 6400, 640m, 700m, 9400, E1405, E1505, E1705.
Latitude: Latitude 131L, D400, D410, D420, D430, D500, D505, D510, D520, D530, D531, D531N, D600, D610, D620, D620 ATG, D630, D630N, D631N, D800, D810, D820, D830, D830N, ATG, X1, E4200, E4300, E5400, E5500, E6400/6400 ATG, E6500, TX,
Precision: M65, M2300, M2400, M4300, M6400.
XPS: M1210.
Vostro: 1000, 1310, 1400, 1500, 1510, 1700, 1710, 2510.
Studio:15.
Adamo: 13.

Manufacturer:Dell
Input
AC: 100-240V, 1,5A(1.5A) 50-60 Hz.
DC: 11-16V, 8A.
Output: 19.5V(19,5V) 3.34A(3,34A)
Size: 2.38" x 5.44" x 1.14"
Power Provided:65 Watts
Cable: Standard AC power cable, 4-pin DC power cable.
Condition: Brand New
In Stock: Yes