80 PLUS Bronze certified semi modular PSU with Rifle Bearing fan. Please note that the Smart BM2 550W comes in two authentic versions (Version A and Version B).

Version A: SP-550AH3CCB-B
Version B: SP-550AH3CLB-B

80 PLUS® Bronze 230V EU certified semi-modular PSU with 14mm Hydraulic Bearing fan.

Smart Series SPG-0500D-B – 500W 80 PLUS® Bronze Certified Semi-Modular APFC PSU

Toughpower Series TPD-0550M – 550W 80 PLUS® Gold Certified Semi Modular APFC PSU