Based on this product's specifications, here are some alternatives and similar models
DELOCK computer case fan 4 cm (40 x 40 x 10 mm), ball bearing, 0.18 m³/h, 5 V DC, black
Summary description:
DELOCK 67286 is a 4 cm (40 x 40 x 10 mm) computer case axial fan with ball bearing and an airflow of 0.18 m³/h. Designed for 5 V DC operation, this compact black fan provides targeted cooling for small enclosures, single-board computers, expansion cards and tight spaces where low-profile ventilation is required.