IBM ThinkPad X20 Hardware Maintenance Manual page 140

For 3-pin power cords(X22, X23, X24):
Region
Canada, Thailand, United States of America
Japan
Australia, New Zealand
Korea
PRC
Europe-France, Germany, etc.
Argentina
Denmark
South Africa, India
Switzerland
Italy
Israel
UK
AC adapter(X20, X21): IBM power cords for a specific
country are usually available only in that region:
Region
72W 2–prong NON-PFC Astec
72W 3–prong PFC Astec
72W 2–prong NON-PFC Delta
72W 3–prong PFC Delta
AC adapter(X22, X23, X24): IBM power cords for a
specific country are usually available only in that region:
Region
56W 2–prong Delta
56W 3–prong Delta
56W 2–prong LITEON
56W 3–prong LITEON
136
ThinkPad X20, X21, X22, X23, X24
P/N
76H3516
13H5273
76H3514
76H3535
02K0539
76H3518
368867
76H3520
76H3522
76H3528
76H3530
76H3532
76H3524
P/N
02K6669
02K6666
02K6673
02K6670
P/N
02K6814
02K6813
02K6816
02K6815