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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.