It accepts female blade sockets in a single row, with all 8 positions loaded. That's a key advantage for high-reliability backplane assemblies where rework or field replacement of individual connectors is needed, since press-fit pins can be pressed out and replaced without desoldering.
This receptacle mates with a UPM blade power header — the male half carries flat blade terminals that insert into the female blade sockets. The press-fit termination on the receptacle side means the backplane is populated without a wave solder step, which simplifies the assembly process for large backplanes with many power connectors. The single-row, 8-position layout with all contacts loaded means every position is active — no dummy or unloaded positions to track.