ralphdaily 02 Aug 2012 20:48 in SpectraView II
NEC posted the following on the their Spectraview downloads page
(http://www.necdisplay.com/support-and-services/spectra-view-II/Downloads)
Important compatibility notice:
Due to issues with the new Mac OS 10.8 (Mountain Lion), SpectraView II is not able to communicate with the displays on some systems with Thunderbolt (miniDisplayPort) video outputs when using a miniDisplayPort to DVI cable. This impacts all LCD 80 series, LCD 90 series, and the P221W models. NEC is currently working with Apple to resolve this issue, which is expected to be fixed in a future update to Mac OS 10.8.
The NEC PA series and newer P series models can utilize a USB connection to the display if necessary.