| Users | Filename | Product | Company | Version | Variant |
|---|---|---|---|---|---|
| 53.75% | %SYSDIR% \ DRIVERS \ capi.sys | ISDN Data Adapter | Siemens AG | 2.60.76.0 | 1209130 |
| 10% | %SYSDIR% \ DRIVERS \ capi.sys | ISDN Data Adapter | Siemens AG | 2.60.76.0 | 21096463 |
| 8.75% | %SYSDIR% \ DRIVERS \ capi.sys | PCI ISDN Card | OEM License | 2.60.62.0 | 1215667 |
| 7.5% | %SYSDIR% \ DRIVERS \ capi.sys | ISDN Data Adapter | Siemens AG | 2.60.76.0 | 1257771 |
| 5% | %SYSDIR% \ DRIVERS \ capi.sys | ISDN Data Adapter | Siemens AG | 2.60.76.0 | 2179939 |
| 5% | %SYSDIR% \ DRIVERS \ capi.sys | PCI ISDN Card | OEM License | 2.50.35.0 | 13489285 |
| 3.75% | %SYSDIR% \ DRIVERS \ capi.sys | ISDN Data Adapter | Siemens AG | 2.50.88.0 | 3022478 |
| 3.75% | %SYSDIR% \ DRIVERS \ capi.sys | Intelligent ISDN USB | Intelligent | 2.60.62.0 | 19368915 |
| 1.25% | %SYSDIR% \ DRIVERS \ capi.sys | SANTIS-Communicator | Siemens Switzerland Ltd | 1.50.187.0 | 32953125 |
| 1.25% | %SYSDIR% \ DRIVERS \ capi.sys | Siemens Callbridge for Data | Siemens AG | 2.50.82.0 | 6429914 |