Could this one work for the T4020?
1806542
Rakuten.com (used to be Buy.com) has the same pen and the t4020 is listed as being compatible.
1806543
Hi Rosanna,one of the customer reviews says that it works for their T4020, so I guess the answer is yes.Best wishes,Steve
2168410
If it's a net10 card it should work. I used a net10 airtime card on my T401g before.
1428199
Go to the Lenovo website and check for memory specs for the T430. I used it in my T410, it works great.
1454460
I want to say yes, because i think T420 has the same optical bay as my T530. It fits T530's optical bay perfectly.
2018922
it fits like a charm it's even better than the screen that it came with, I have the Lenovo ThinkPad t420 and I don't think it will fit yours
2172840
Edward from the searching I have done online, yes the battery will work for your T400. I hope this is a backup that you are thinking about purchasing, from my experience you really need one. Hope this helps!
644083
According the following URL link, yes: http://lenovo.com/us/en/PDFs/Thinkpad_t400_and_t500_datasheet.html
1454461
The 12.7mm drive bay fits the regular T420. I believe you need the 9.5mm drive bay for the T420S.
255076
I selected the boilerplate "I don't know response" but if you would like any basic info about the product or a more detailed picture let me know. As I mentioned in my initial post, I have a T430 so I don't know what other laptop if would fit. You could probably go over to Lenovo's site and look the comparable lenovo product up in the accessories for both laptops and see if they are the same. BTW, still love mine.
373020
I got this for my 4820tg- you may want this one. http://www.amazon.com/Laptop-Keyboard-Aspire-3830TG-4830TG/dp/B00GX2N5HO/ref=sr_1_1?s=electronics&ie=UTF8&qid=1424319097&sr=1-1&keywords=4830t+keyboard
1454458
I don't own a T420s so I can't say. Try looking on Leonvo's website to see what's different between the T420 and T420s. Mine is a T420 and it works just fine.
1401593
I don't know! If they are exactly the same dimensions, it might technically work. This case has the proper holes for the camera, USB ports, charger port, and other inputs, however, so I'd be skeptical as to whether it would be an exact match for any other model besides the TF300 or TF300T.
1038701
We've ordered a few of these, and they works with our fleet of T440p. I suspect it will work with the T440s also. Cheers!
261781
Yes, it does. I bought that battery for my Lenovo T400 a year or two ago. It fit and works fine.
1105229
I use mine in a T10 and it works fine. I would assume it would work in a T20 as well considering they all use the same T-discs anyways.
995875
According to the specs of T400s, it's NOT work.You can google "thinkpad T400s msATA", or refer below:https://forums.lenovo.com/t5/T400-T500-and-newer-T-series/mSATA-SSD-on-T400/td-p/1407231
7961
It worked from my T410 to T440P, so I would think you would be ok going from T420 to T440