Power Connector

Over time, different ThinkPads have used different power connectors. You can use a higher Amperage rated power supply then your ThinkPad needs, as long as the physical connector is correct. But you should not use a lower Amperage power supply on a ThinkPad needing more Amperage. Doing so will overheat the power supply, and might cause issues such as screen flicker. Hint: In case you cannot find your Model ThinkPad listed, or you wish to double check, you can find the required power information on a label on the bottom of your ThinkPad NOTE! The Amperage's listed below are the OUTPUT values for the AC adapter, which should be equal or greater then what your ThinkPad requires All current Thinkpads require 20 Volt DC input. See also the official Lenovo page for power adapters.

10.5 V, 1.0 A Power

• ThinkPad 220

15 V, 2.0 A Power

6.3 mm outer, 3.0 mm inner diameter.

Help needed

Will someone with an actual unit in-hand, please confirm the size?

• ThinkPad 350, 350C
• ThinkPad 500, 510CS
• ThinkPad 730T

4-Pin connector

4 pin power connector

Unknown watts/amps

• ThinkPad 355, 355CS, 355C
• ThinkPad 360, 360CS, 360C, 360P, 360CSE, 360CE, 360PE
• ThinkPad 370C
• ThinkPad 700, 700C
• ThinkPad 720, 720C
• ThinkPad 750, 750CS, 750C, 750P

35W

AC Adapter PN 76H0119

• ThinkPad 755CX, 755CV, 755CD, 755CDV
• ThinkPad 760L, 760C, 760CD, 760EL, 760ELD, 760E, 760ED, 760XL, 760XD

40W

• ThinkPad 755C, 755CS, 755CSE, 755CE
• ThinkPad 760LD

56W

AC Adapter PN 12J2456

• ThinkPad 765L, 765D

16 Volt 4-Pin Power Mini-Din connector

120W power plug

120W 7.5 Amps

ThinkPad 120W AC Adapter (Support Website)
AC Adapter FRU PN 92P1035
AC Adapter Ouput: 7.5A, 16V

• ThinkPad G40, G41, G50
• ThinkPad Mini-Dock

16 Volt Coax connector

16V coax connector

This is a 2.5/5.5mm barrel connector

35W 2.2 Amps

AC Adapter input: 1.9A, 35W
AC Adapter output: 2.2A, 16V

• ThinkPad 340CSE (rated 1.0A)
• ThinkPad 345CS, 345C
• ThinkPad 365CS, 365C, 365CSD, 365CD, 365E, 365ED, 365X, 365XD
• ThinkPad 380, 380D
• ThinkPad 560, 560E, 560X, 560Z

54W 3.36 Amps

Some of them have been recalled: part 02K6549 (FRU 02K6550), with three hollow pins. (CPSC recall) (Lenovo document) See the page Damage in 56W AC-Adapter, plastic housing melted.

• ThinkPad 240, 240X
• ThinkPad 390, 390E, 390X
• ThinkPad 570, 570E
• i Series 1400 and 1500 "wave 2" (type 2621)
• i Series 1400
• ThinkPad T20, T21, T22

56W 3.5 Amps

AC Adapter FRU PN 02K6810, 02K6816

• ThinkPad 235
• ThinkPad 340
• ThinkPad 380E, 380ED, 380XD, 380Z
• ThinkPad 385D, 385ED, 385XD
• ThinkPad 535, 535E
• ThinkPad 600, 600E, 600X
• ThinkPad 701C, 701CS
• ThinkPad 770, 770E, 770ED, 770X, 770Z
• ThinkPad TransNote
• ThinkPad X20, X21, X22, X23, X24, X30, X31, X32, X40, X41, X41 Tablet

72W 4.5 Amps

AC Adapter FRU PN 02K6744, 08K8202

• ThinkPad A20m, A20p, A21e, A21m, A21p, A22e, A22m, A22p, A30, A30p, A31, A31p, A275, A285, A475, A485
• ThinkPad R30, R31, R32
• ThinkPad R40, R40e, R50, R50e, R50p, R51, R51e, R52
• ThinkPad T23, T30
• ThinkPad T40, T40p, T41, T41p, T42, T42p, T43, T43p

19 Volt Coax connector

IBM called it "barrel connector, slim". 45W 2.4 Amps. 5.5 mm outer, 2.1 mm inner diameter. Option Marketing number 11J8702. See AC adapter matrix (Doc PD012162) as a source of information.

• ThinkPad 310 (type 2600)
• ThinkPad 310, 310D, 310E, 310ED
• ThinkPad i Series 1400 and 1500 "wave 1" (type 2611) (reference Doc LWIK-3Z7J5H)
• i Series 1410, i Series 1411, i Series 1412

20 Volt Coax connector

20V coax connector

7.5mm OD, 0.8mm diameter central pin

65W 3.25 Amps

AC Adapter FRU PN 92P1211
AC Adapter Output 3.25A, 20V

• ThinkPad R60, R400, R500 - with Intel Graphics
• ThinkPad T60, T400, T400s, T410i, T410s, T410si, T500, T510, T510i - with Intel Graphics
• ThinkPad X60s, X61, X61s, X61 Tablet
• ThinkPad X100e, X200, X200s, X200 Tablet, X201, X201i, X201s, X201 Tablet, X300, X301
• Thinkpad Z60m, Z60t, Z61e, Z61m, Z61t - with Intel Graphics

90W 4.5 Amps

AC Adapter FRU PN 92P1107

• ThinkPad R60, R60e
• ThinkPad T60, T60p, T61, T61p, T400, T410, T500, T510 - With ATI or Nvidia Graphics
• ThinkPad T520 - Dual Core
• ThinkPad W500
• ThinkPad Z60m, Z60t

135W 6.75 Amps

AC Adapter PN 55Y9317

• ThinkPad T520 - Quad Core
• ThinkPad W510

170W 8.5 Amps

AC Adapter PN 0A36227 (US) and PN 0A36231 (EU)

• ThinkPad W520
• ThinkPad W530

This AC adapter has the same diameter as the usual 20V AC adapters, but there is an extra plastic knob on one side of the connector. It is not round any more, that is, you can only plug it in one particular orientation. The extra knob prevents one from using the AC adapter on any other Thinkpads.

W700 Coax connector

20 volts, 6.0 mm outer, 3.0 mm inner diameter.

Help needed

Will someone with an actual unit in-hand, please confirm the size?

The W700/W700ds AC adapter plug has a different diameter than all other 20 Volt AC adapters. You cannot plug in a different AC adapter into a W700-series Thinkpad nor can you use the W700 AC adapter on a non-W700 Thinkpad.

170W 8.5 Amps for W700

AC Adapter PN 41R4421

• ThinkPad W700, W700ds

230W 11.5 Amps

AC Adapter PN 55Y9333

• ThinkPad W700, W700ds, W701, W701ds