Two positions at 0.60 mm pitch
The SM02B-XSRS-ETB(LF)(SN): This is a 2-position, single-row header from JST's XSR series, pitched at 0.024" (0.60 mm) — tight enough to save board real estate but still hand-solderable under a microscope. The 0.2 A per contact rating tells you this is a signal-only interconnect, not for power.
