The HMIYBINSL11 is a serial line interface accessory for the Schneider Electric Harmony iPC range, specifically an add-on for the Box PC platform. It's classified as a connection accessory (category US10MC322575) — the piece that brings RS-232/422/485 connectivity to the industrial PC when the base configuration lacks it.
This part is obsolete per the manufacturer's lifecycle record.
Mounts inside the Harmony iPC Box PC chassis as a serial expansion module. Single unit per package. No DIN-rail or panel cut-out required — it's an internal slot card, so the integration step is opening the PC enclosure and seating it on the internal header.