The ram could be upgraded to up to 20 MB in total if the user had a IC DRAM Card, which goes into a slot under the floppy disk drive.

Two notable models in the series, the 360P and 360PE, featured a pen touch display, which could also fold back and down to close like a tablet.

IBM ThinkPad 360 — One of the first models in the series, it introduced a Intel 486SX processor running at 33 MHz.

It featured a 9.5-inch monochrome screen, and could hold a battery charge up to 10 hours.

[3] IBM ThinkPad 360C — Released the same time as the 360, the 360C model was basically identical to the 360 but with a 8.5-inch TFT color screen, and a decrease to 5 hours of battery life.

The machine ran DOS 6.21 with PenDOS 2.2 and had a battery life of about 5 hours.

IBM ThinkPad 360CE — One of the final models, the 360CE was a slight upgrade from the earlier 360/C/CS models, offering a Intel 486 DX2 running at 50 MHz, a 8.4-inch 640×480 TFT display, and an additional 540 MB option for hard disk size.