The XKZ3 module is used to provide low-voltage power between the Quantum Bantam Battery and the Quantum Batter 1 Compact and the following flash units: Canon 540EZ and 550EX; Contax TLA360; Metz 58AF-1N, 58AF-1C, 54MZ-3 and 54MZ-r; Minolta 3600HS(D) and 5600HS(D); Nikon SB800, SB24, SB25, SB26, SB27, SB28 non-Euro, SB28 Euro, 28D, 28DX, 80DX and SB29; Olympus FL-50; Sunpak PZ5000AF.