By Danielle Kaye NEW YORK (Reuters) -Apple Inc on Tuesday added 5G connectivity to its low-cost iPhone SE and iPad Air and introduced a faster chip for a new desktop, a high point in Apple’s move to power its devices with microprocessors designed in house. The new Studio desktop starts at $3,999 with the new M1 Ultra chip. The iPad Air also got Apple’s M1 chip that was developed for laptops. “Apple Silicon strategy is the key highlight,” said analyst Neil Shah of Counterpoint Research. “Apple is scaling the portfolio of its in-house semiconductor capabilities to power a broader set of richer d…