Autors: 
Paldies Aināram.
Aparāts izgatavots 1991.g.
Manufacturer IBM (International Business Machines ) (USA)
Type Laptop
Production start 1991 Production end 1992
RAM 2-6Mb
CPU 80386Sx – 12 Mhz
Operating System IBM DOS 3.3; Win 3.0 and higher
Text (Cols x Rows) 80 x 25
Graphics LCD 9,5 inch; 640/480/16 grey
Storage memory FDD 1,44Mb 3,5 inch; Hd 40 mB
Serial port RS232 Parallel port Centronics
Others port External FD; VGA; PS/2 Mouse
Original price 2990$
Configurations Keyboard 85 Keys; NiCad Battery; External Power Supply; Numeric keypad provided
After the departure of Bob Lawten from IBM, the team at IBM had little development direction after the IBM PS/2 L40SX. James Cannavino pushed for the new notebook series, which fell behind schedule.
The N45SL, N51SX and N51SLC were announced on the same day as the IBM PS/2 (color laptop) CL57SX. During this time there was a distinction between notebooks and laptops, where the former are A4
sized and the latter are larger.
The notebooks were modeled after the PS/55 Note which was released by IBM in Japan in April 1991