 The 380 shipped with Windows 95, but they were capable of running Windows 3.11, Windows NT, OS/2 Warp, Windows 98, Windows Me, Red Hat Linux, as well as various other Linux distributions.Originally, there were two models; the base ThinkPad 380 and the ThinkPad 380D, which was equipped with a CD-ROM drive.The 380 came with an Intel Pentium processor running at 150 MHz with or without the optional MMX feature.