This article identifies a problem causing the chassis intrusion mechanism on the Optiplex 390/790/990 systems not to function correctly.
The OptiPlex 390/790/990 systems may not have the SMBIOS tokens enabled for Door Open/Door Close events. As a result, the chassis door status is not being reported to a system management server when queried.
To resolve this issue, download and install the latest BIOS release for your system model:
Article ID: QNA29708
Last Date Modified: 03/03/2015 03:45 PM