FRU: 42W2460 42W2461Compatiable with: 42W2462 42W2463DC 5V, 0.25ASKU# FN.IM.903Please be noted that this fan does NOT come with heatsink, so basically you'll reuse your old heatsink(only swap the fan).Compatiable with:FRU 42W2460  42W2462 42W2463 Lenovo 42W2461IBM Lenovo Thinkpad T61 series LaptopInstallation Hints:Please refer to IBM's hardware maintenance manual, which can be found here:http://support.lenovo.com/en_US/guides-and-manuals/detail.page?LegacyDocID=MIGR-39298Please send the emails to Seller for more details.