Lenovo been produced and sold by Lenovo since 2005. ThinkCentre computers typically include mid-range to high-end processors, options for discrete graphics cards, and multi-monitor support. Similar to the ThinkPad line of computers, there have been budget lines of ThinkCentre branded computers in the past. Some examples of this include: M55e series, A50 series, M72 series. These "budget" lines are typically "thin clients" however. The ThinkServer product line began with the TS100 from Lenovo. The server was developed under agreement with IBM, by which Lenovo would produce single-socket and dual-socket servers based on IBM's xSeries technology. An additional feature of the server
ThinkPad X series i3 and AMD's E1/E2. All of the models are basically the same as the X130e, with some including SIM card slots for cellular network access and some including WWAN cards. The ThinkPad X Series laptops released in 2015 by Lenovo were the third-generation X1 Carbon and X250 during the CES congress. The ThinkPad X250 has a Broadwell processor. The X250 saw a return of separate trackpoint buttons, and it has only one RAM slot. A touch screen was available for this model. The X250 uses the rectangular power plug. The ThinkPad X Series laptops were released in 2016 by Lenovo