Lientec LED’s Quantum Cube Mini 121 Single Set is a compact 50 W horticultural LED kit built around a 70×70 mm Quantum Cube board populated with 121 Samsung LM301H diodes. The set includes a 120 mm heatsink, Mean Well LPC‑60‑1400 constant‑current driver, wiring (1.5 m mains lead and 4 m single-core), Wago connectors, hanging hardware and thermal adhesive for mounting. At 30–36 V and up to 1650 mA, the module achieves up to 2.93 µmol/J (5000 K version) with a 115° beam angle. Lientec positions the Mini 121 as a direct CXB3590 replacement at 1400 mA ≈ 50 W. Recommended single‑cube lighting area is approximately 40×40 to 60×60 cm. Board variants are offered in 3000 K, 3500 K and 5000 K; current stock is 5000 K.

