IBM PS/2 Model L40 SX
              < IBM PS 
 
            
          | Also known as | Type 8543 | 
|---|---|
| Manufacturer | IBM | 
| Product family | IBM PS/2 | 
| Type | Laptop | 
| Release date | March 26, 1991 | 
| Introductory price | US$5,995 (equivalent to $13,430 in 2024) | 
| Discontinued | February 1993 | 
| Units sold | 150,000+ | 
| Operating system | DOS, Windows 3.0, OS/2 | 
| CPU | Intel 80386SX @ 20 MHz (optional Intel 80387SX math co-processor) | 
| Memory | 2 to 18 MB (two expansion slots) | 
| Storage | 60 MB hard drive 3.5" 1.44 MB floppy drive | 
| Display | 10" monochrome STN LCD | 
| Graphics | VGA (640x480) | 
| Connectivity | parallel port, serial port | 
| Power | Battery: Ni-Cd | 
| Weight | 3.49 kg (7.7 lb) | 
| Predecessor | IBM PC Convertible | 
| Successor | |
The IBM Personal System/2 Model L40 SX (stylized as PS/2 Model L40 SX) is a laptop 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.