FYI:
I recently got the firmware upgrade on my VT540, making it a VT540K. (Actually NEC just replaced mine with one that had the firmware in place. This gave me a unit with 0 hours on the bulb. Thanks NEC!)
I was curious as to the differences between the VT540 and the VT540K so I emailed NEC support. This is the response:
“The differences between the VT440/540 & the VT440K/540K are:
Firmware change to support UXGA (vertical scan frequency increased from 117Hz. to 120Hz.)
Firmware change of keystone range from +/-30 degrees to +45/-15 degrees
Aspect ratio button added to remote control
soft cases shipped with unit
RGB (VGA) cable changed to slim-line version
MAC adapter no longer included in boxâ€
I recently got the firmware upgrade on my VT540, making it a VT540K. (Actually NEC just replaced mine with one that had the firmware in place. This gave me a unit with 0 hours on the bulb. Thanks NEC!)
I was curious as to the differences between the VT540 and the VT540K so I emailed NEC support. This is the response:
“The differences between the VT440/540 & the VT440K/540K are:
Firmware change to support UXGA (vertical scan frequency increased from 117Hz. to 120Hz.)
Firmware change of keystone range from +/-30 degrees to +45/-15 degrees
Aspect ratio button added to remote control
soft cases shipped with unit
RGB (VGA) cable changed to slim-line version
MAC adapter no longer included in boxâ€