Lenovo ThinkPad T420s 2.8 Ghz i7-2640M with NVIDIA graphics. This was my personal device and is being sold as is. Originally came with Windows 7 Pro. License key in the battery bay. The hard drive rails are included. There are two SoDimm slots allowing, if i recall correctly, 16Gb of memory. This laptop was purchased with an SD card adapter loaded in the Express Slot. Noted in the pictures. There is also a DVD/CD-RW optical drive. No hard disk drive or memory is included. The laptop has normal signs of use. The track pad texture is worn. See the photos. Included is the original equipment docking station. I do not have the key. The original A.C. power adapter. The battery is an aftermarket item and is fairly new to the device. Thank you for looking...