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Posts: 115
Registered: ‎10-03-2011
Location: Ontario, Canada

T40 USB issues

I have been having issues with my T40 for a while, they would cut in & out, not recognize hardware, and get a pop-up saying to use a 2.0 USB port. I reformatted and I still get the pop-up telling me the hardware would perform faster in a 2.0 USB port. What is wrong with my T40s USBs

Lenovo A1-07, T40 Thinkpad, T400 Thinkpad, iPhone 4s
Posts: 7,363
Kudos: 696
Solutions: 732
Registered: ‎11-23-2007
Location: USA

Re: T40 USB issues

Your T40 is suffering from a failing SouthBridge chip, a very common problem on these machines.


Having the chip professionally re-balled is the only option apart from motherboard replacement.



In daily use: T43pSF, R60F, T410, W510

Backups: T60, T61p, R500F

For sale: T60 (15" SXGA+ IPS), T61p (14" SXGA+ & 15.4" WUXGA),

Rebuilding: A31p, T42p, X24

Non-ThinkPads: Panasonic CF-31 & CF-52, HP 8760W

I build FrankenPads....scary FrankenPads...

S = SATA-mod (on T43/p units only)
F = FrankenPad
L = LED-mod utilizing an UXGA AFFS LED screen

Please DO NOT PM me with requests for individual support, but post your questions and concerns in the appropriate section of the forum where other users can benefit from them as well. Thank you.