Wiktionary
downlevel
a. (context computing English) Having lesser capabilities or a lower version number.
Usage examples of "downlevel".
He moved uneasily across the plaza, miserably aware that the banquet must be almost about to begin and he had an enormous distance downlevel to traverse.
The rest of my detail is downlevel, disarming and collecting all the explosives they can find.
Of course, he would not have lasted as long as he had downlevels if he had not had a roachlike ability to sense and avoid danger.