First, the mechanical characteristics of Lynx^™ QD. QD stands for “quad differential” and provides a 4-row contact array in a compact, 2-row footprint. Amphenol ICC optimized Lynx QD for speed, supporting data rates up to 56 Gigabit per second, PAM4 modulation. The modular design affords flexible options in pin counts from 36 to 240 pins. This equates to module sizes that support 12 to 80 differential pair positions. The distance between contact rows (known as pitch) is 0.9mm and is consistent across all module sizes, making Lynx QD a high density, high speed, length configurable solution for many Mezzanine-style interconnect applications. The integrated shielding design of the contact array consists of wide ground contacts separating narrow signal contacts. The resulting offset contact array yields superior signal integrity and limits crosstalk. With regards to electrical characteristics, the Lynx QD supports PCIe Gen 4 and Gen 5 standards. The impedance is 92 Ω and when configured as an open pin field each contact can support up to 1.5A of power. Coplanar module sizes include 20 and 40 positions while the right-angle module sizes include 12, 20, and 40 positions. Additional module sizes for 60 or 80 positions are also available.