C21-C28, Duplex, 2.4dB | FHD®C29-C36, Duplex, 2.4dB | FHD®C53-C60, Duplex, 2.4dB | FHD® C53-C60, Duplex, 2.8dB | FMUC53-C60, Duplex, 3.0dB | FMUC21-C35, Simplex, 4.2dB | FMUC22-C36, Simplex, 4.2dB | FMU1U 4-slot Chassis | FHD®1U 2-slot Chassis | FMU+NaN