IBM 4840-563 System Reference Manual page 76

The ability to read Bank of America mini cards and other non-ISO standard cards is desired. Since some of
these cards have higher track density consideration should be given to accommodating them. This effort
should not endanger the MSR's ability to read ISO compliant cards.
SurePOS 500 Model XX3 Technical Reference, v 1.3 Page 76 of
81