It's a shielded, right-angle mid-mount design that solders to the board edge — the hybrid mounting (surface mount + through-hole) gives it mechanical hold on a cutout board edge. The gold-plated contacts and 5000-cycle rating put it well above the typical mini B duty cycle, so it was specified for equipment that sees frequent plug/unplug — test fixtures, handheld readers, or panel-mount data ports.
Lifecycle Reality — Obsolete and Sourced to Order
There's no listed direct replacement or cross-reference in the UX series. If you're designing a new board, look at current Hirose USB mini B offerings in the UX series; the 5-contact mid-mount form factor is common, but the specific board footprint and shield tab layout may differ.
What the 5000-Cycle Rating Means in Practice
Most USB mini B connectors are rated for 1000 to 2000 mating cycles. The 5000-cycle rating on this UX60SD-MB-5S55 means the gold plating is thick enough to survive five times the usual wear — the contact wipes clean each time without exposing the base metal. That matters for a connector that lives on the end of a cable tethered to a moving assembly or a daily-use test point. The trade-off is that the high-cycle gold spec is part of what makes this part hard to find now — it was a niche variant.