| Users | Filename | Product | Company | Version | Variant |
|---|---|---|---|---|---|
| 52.57% | %SYSDIR% \ DRIVERS \ pctnullport.sys | Null-modem emulator | PCtel Inc. | 2.0.2.0 | 2331414 |
| 37.55% | %SYSDIR% \ DRIVERS \ pctnullport.sys | Null-modem emulator | PCtel Inc. | 2.0.2.0 | 1212129 |
| 5.93% | %SYSDIR% \ DRIVERS \ pctnullport.sys | Null-modem emulator | PCtel Inc. | 2.0.2.0 | 2156600 |
| 3.95% | %SYSDIR% \ DRIVERS \ pctnullport.sys | Null-modem emulator | PCtel Inc. | 2.0.2.0 | 25091573 |