| Users | Filename | Product | Company | Version | Variant |
|---|---|---|---|---|---|
| 35.59% | %SYSDIR% \ DRIVERS \ portio.sys | USDM | EPoX Inc. | 2.0.0.0 | 3139113 |
| 15.25% | %SYSDIR% \ portio.sys | Microsoft(R) Windows NT(TM) Operating System | Microsoft Corporation | 4.0.1381.1 | 2906321 |
| 11.86% | %SYSDIR% \ DRIVERS \ portio.sys | Microsoft(R) Windows NT(TM) Operating System | Microsoft Corporation | 4.0.1381.1 | 2245740 |
| 10.17% | %PROGRAMFILES% \ PICPgm \ portio.sys | 1206288 | |||
| 8.47% | %SYSDIR% \ DRIVERS \ portio.sys | Microsoft(R) Windows NT(TM) Operating System | Microsoft Corporation | 4.0.1381.1 | 2491513 |
| 5.08% | %PROGRAMFILES% \ PICPgm \ portio.sys | 8578302 | |||
| 3.39% | %SYSDIR% \ portio.sys | Microsoft(R) Windows NT(TM) Operating System | Microsoft Corporation | 4.0.1381.1 | 17034412 |
| 3.39% | %SYSDIR% \ portio.sys | Microsoft(R) Windows NT(TM) Operating System | Microsoft Corporation | 4.0.1381.1 | 10140648 |
| 1.69% | %SYSDIR% \ portio.sys | Microsoft(R) Windows NT(TM) Operating System | Microsoft Corporation | 4.0.1381.1 | 2590224 |
| 1.69% | E: \ ElektronikProgs \ PICPgm \ portio.sys | 32352240 | |||
| 1.69% | %SYSDIR% \ DRIVERS \ portio.sys | DriverWorks | Compuware Corporation | 2.50.0.0 | 25843397 |
| 1.69% | F: \ PICPgm \ portio.sys | 28806838 |