 LGA 1200 is a land grid array mount with 1200 protruding pins to make contact with the pads on the processor.It uses a modified design of LGA 1151, with 49 more pins on it, improving power delivery and offering support for future incremental I/O features.Pin 1 position remains the same as it was in previous generation processors, but it has shifted socket keying to left (previously it was right), making Comet Lake processors incompatible both electrically and mechanically with previous chips.