IBM PS/55 Note
              < IBM PS 
 
            
          | Manufacturer | IBM | 
|---|---|
| Product family | IBM PS/55 | 
| Release date | 1991 | 
| Introductory price | between $1,680 and $2,550 | 
| Predecessor | IBM PC Convertible | 
The IBM Personal System/55 Note (stylized as PS/55 note) is a series of notebooks manufactured by the IBM subsidiary IBM Japan as part of the IBM Personal System/55 series.
Machine type 5523 were designated as 'notebook' computers distinct from type 5535 which were larger 'laptop' multistation computers.
The international IBM PS/2 Note series was based on the PS/55 Note series and used the ISA bus (with the final exception of the C52).