1x PSU + 1x Bussboard (all low voltage cables pre-wired), 1x PSU + 1x Bussboard (incl. DIY cable kit), 1x PSU + 2x Bussboard (all low voltage cables pre-wired), 1x PSU + 2x Bussboard (incl. DIY cable kit), 1x PSU + 3x Bussboard (all cables low voltage pre-wired), 1x PSU + 3x Bussboard (incl. DIY cable kit)