As a Mini HD form factor, it carries the SAS (Serial Attached SCSI) signal set in a denser package than the standard SAS 4i or 29-pin interfaces, fitting into the same board footprint as a 36-circuit header but with a lower stack height for 2.5-inch drive bays and mid-plane routing.
Press-fit termination eliminates soldering — the compliant pin compresses into the plated through-hole, creating a gas-tight joint that survives rework and board reflow without thermal stress.
Comparison with 2227302-3
The only recorded difference is the package: the 2227580-1 ships in Tray, while the 2227302-3 ships in Box. Both carry Active lifecycle status. For a BOM line, the choice between them comes down to the packaging preference of the assembly line — tray-fed pick-and-place versus boxed bulk — not the connector's fit or performance.