Operating system : Windows 10 Home 64-bit Windows 10 Pro 64-bit - Lenovo recommends Windows 10 Pro. Windows 7 Professional 64-bit preinstalled through downgrade rights in Windows 10 Pro 64-bit
Pen (optional) : ThinkPad Pen Pro, active pen for multi-touch display
Graphics : Intel HD Graphics 530 / P530 in processor and NVIDIA Quadro M1000M (2GB memory) or M2000M (4GB memory); supports external digital monitor via HDMI, Mini DisplayPort, or Thunderbolt ; supports four independent displays; Max resolution: 3840x2160 60Hz (DisplayPort via Mini DisplayPort cable); 3840x2160 60Hz (Thunderbolt); 3840x2160@30Hz (HDMI)
Chipset : Intel SoC (System on Chip) platform
Memory : Up to 64GB, 2133MHz DDR4, dual-channel capable, 4 x DDR4 SO-DIMM sockets, 64GB max