blue and white 15-hole [independent switch]](蓝白15孔【独立开关】) blue and white 20-hole [independent switch]](蓝白20孔【独立开关】) blue and white 21-hole [main switch]](蓝白21孔【总开关】) blue and white 7-hole [main switch]](蓝白7孔【总开关】) blue and white 12-hole [main switch]](蓝白12孔【总开关】) blue and white 14-hole [main switch]](蓝白14孔【总开关】) blue and white 15-hole [main switch]](蓝白15孔【总开关】) blue and white 20-hole [main switch]](蓝白20孔【总开关】) blue and white 30-hole [main switch]](蓝白30孔【总开关】) blue and white 28-hole [main switch]](蓝白28孔【总开关】) blue and white 40-hole [main switch]](蓝白40孔【总开关】) blue and white 50-hole [main switch]](蓝白50孔【总开关】) blue and white 5-hole [no switch]](蓝白5孔【无开关】)

total length 2.2 m [high power available]](总长2.2米【大功率可用】) total length 3.2 m [high power available]](总长3.2米【大功率可用】) total length 5.2 m [high power available]](总长5.2米【大功率可用】) total length 10.2 m [high power available]](总长10.2米【大功率可用】) no wire (need to be wired by yourself)(不带线（需要自己接线）)