The IBM Retail POS Keyboard was one of five Model M-designated POS input devices introduced with the IBM 4694 POS Terminal in June 1993 and is a 50-key functional keypad. The Model M7 was the standard keypad for IBM's POS terminals from thereafter. In its default layout, 49 of the 50 keys are individual, and the middle bank has a numeric keypad made up of single-unit keys with the zero key taking up two key positions (hence 49). The single key on its own serves as a dedicated Ctrl key. The other slightly larger keys are designed to be programmable and thus have transparent keytops. After Toshiba acquired the IBM Retail Store Solutions division in 2012, Toshiba Retail continued producing the M7 under their own branding.