Bundled with all required features in the IPC chassis market and well-suited for harsh industrial environments, the AX6151A/B 14/20-slot fault resilient rackmount server is said to be ideal for CTI platform, computer-based PBX system, voice mail systems, heavy duty network server, or fax on demand systems.The chassis is a EIA RS-310C 19-in. rackmount 5U high multi-system server equipped with LEDs at the front panel to display the status of Power On/Off, hard drive, temperature, systems fans, CPU cooling fans, and power supply voltage. Four hot-swappable redundant fans keep the system within its rated operating temperature. It supports PS/2 or ATX hot-swappable redundant power supply. to meet different applications, a flexible drive cage can hold up to four 5.25" and one 3.5" disk drives. In addition, the hold-down clamp protects the plug-in cards against vibration.