USB 2.0 micro B receptacle, 5 contacts
The DX4R005JJ2R1800 is a 5-contact USB micro B receptacle in JAE's DX4 series, rated for USB 2.0 signaling. Current rating is 0.5 A on signal contacts and 1.8 A on the power contact at 30 V; gold-plated contacts handle the 10,000 mating cycles.
Same-series sibling: DX4R005HJ5R2000
Within the DX4 micro B family the DX4R005JJ2R1800 shares the 5-contact count, gold plating, and 10,000-cycle rating with the DX4R005HJ5R2000 — the two differ only in packaging and colour, so the board footprint and mating half are identical.