Built for data‑center breakouts, this OS2 harness features an MTP/MPO APC on one end and multiple LC/UPC duplex legs on the other. Typical builds: 8F→4×LC duplex or 12F→6×LC duplex per TIA‑568.3‑D polarity, enabling QSFP (PSM4/DR4 mode) to 4×SFP+/SFP28 (10/25G LR/Lite) interconnects. A 3.0 mm trunk with aramid strength and numbered 2.0 mm legs streamlines routing. Available with PVC (OFNR) or LSZH jacket. Each assembly ships with full IL/RL and interferometer reports and polarity maps.