IPC-611 are 4U-high 15-slot rackmount chassis designed for mission critical applications. They support versatile 15-slot passive backplanes or ATX/microATX motherboards, high efficient switching power supply, and easy-to-maintain cooling fans. ACP-4000 especially provides the alarm module to monitor system status such as power, HDD, temperature and fans to minimize system downtime. A wide range of standard computing peripherals can be integrated with these chassis to meet different applications under rugged environments 24 hours a day, 7 days a week.