What This ZQSFP+ Cage Does in the System
It terminates via press-fit pins into a through-hole, right-angle PCB layout, placing the cage parallel to the board edge for panel-mount I/O. The EMI shielding built into the cage keeps radiated emissions from the high-speed serial lanes inside the chassis — critical when running 25 Gbps or 56 Gbps PAM4 per lane through QSFP28 or QSFP56 modules. The base product number is 2227249.
Press-fit termination means no solder wicking into the via barrel and no reflow profile to manage — the compliant pin cold-deforms into the plated through-hole.
Does It Include the Heat Sink?
Yes — the 2227249-2 ships with an integrated heat sink as part of the cage assembly. The heat sink sits on top of the ganged cage, drawing thermal energy from the module bodies through the cage roof. For higher-power QSFP28 modules (3.5 W and above), the system-level airflow over this heat sink determines whether the module case temperature stays within the 70 °C or 85 °C limit, depending on the module specification.
Compatibility with QSFP28 Modules
The ZQSFP+ cage footprint is mechanically compatible with QSFP28 modules — the 1x4 ganged configuration accepts four standard QSFP form-factor modules.