Searay high-speed, high-density connectors come in 1.27 X 1.27mm open pin field grid array, with no pins dedicated as signal or ground.
Some pins can be specified as single-ended signals, some can be routed as differential pairs, some ground, and some for power, all on the same connector. Up to 500 I/0s for single-ended designs, or 125 differential pairs. Rated up to 34Gbps at a 10mm stack height. For telecom, datacom, computer and peripheral, industrial, test and measurement, medical, instrumentation, and military applications. Comes in vertical, right angle, coplanar or horizontal orientations.
Samtec