It carries 5 contacts on a single row, matching the standard USB micro pinout for USB 2.0 data plus VBUS and ID lines. The free-hanging (in-line) mounting style and solder termination mean it terminates to a cable assembly, not a PCB. The white insulation colour is standard for TE's micro A plugs. Rated for 30V and a multi-amp current profile — 0.5A, 1A, and 1.8A per contact — the 1.8A leg covers the VBUS power pin, while the signal pins run at the lower ratings.
Sourcing This Obsolete Part
The 1939053-1 is officially marked Obsolete by TE Connectivity. There is no listed direct replacement or successor order code in the TE portfolio.
What Crosses Into the Harness You've Got
It is not compatible with USB 3.0 — the 1939053-1 is a USB 2.0 (480 Mbps) part, so the pinout and signal integrity stop at that spec. If the existing harness uses a micro B plug, this micro A will not fit the receptacle; the two form factors are keyed differently. The 5-contact count and 30V rating are standard for the micro A interface, so any micro A receptacle from another manufacturer that follows the USB 2.0 pinout will mate electrically.