IBM PS/2 L40SX

The IBM Personal System/2 Model Laptop 40SX (stylized as PS/2 L40SX) was a portable computer made by IBM, as part of the IBM PS/2 series. It was the successor to the IBM PC Convertible. The "SX" in the name refers to its CPU, the Intel 80386SX.
Development.
Western Digital supplied video and logic chips and helped designing and manufacturing motherboards.
Recall.
The Wall Street Journal reported that IBM had received 15 complaints of a short circuit occurring between the circuitry and a conductive coating inside the case which, in some instances, has melted a small hole in the case. The short occurs when the laptop is run on batteries, and IBM reported it will install a fuse to stop overheating. They had to issue a recall for 150,000 machines.
Successors.
One year after the announcement of the L40SX, on 24 March 1992, three notebooks and a laptop were announced by IBM: N51SX, N51SCL, N45SL as part of the IBM PS/2 Note series and the CL57SX. The CL57SX was the first laptop from IBM that featured a color TFT display.