System Description 15System DescriptionThe selection of SDRAM and Flash memory depends on the main controlboard. For their specifications, refer to “The RPU Module” and “The RPU2Module”.The standard shipment provides a single PSU for power supply, but youcan order one more PSU for redundancy. See “The PSU Module”.About the RouterProcessor UnitThe router processing unit (RPU or RPU2) is the main controller for theRouter 6000. The RPU or RPU2 handles protocols, forwards low-speedpackets, governs interfaces, and detects faults. You can see informationabout the operating state of the FAN module, PSU, and system using theLEDs on the RPU or RPU2. Alternatively, you can monitor system statususing a network management system. The RPU or RPU2 also provides ahardware reset button.Your Router 6000 may have one of two different Router Process Units:and RPU or and RPU2. For information on the RPU, refer to “The RPUModule”. For information on the RPU2, refer to “The RPU2 Module”.Table 1 System description of the 3Com Router 6040/6080Item 3Com Router 6040 3Com Router 6080FIC slot 4 8Dimensions (H x W x D) 130.5 x 436.2 x 420 mm(5.1 x 17.2 x 16.5 in.)219.5 x 436.2 x 420 mm(8.6 x 17.2 x 16.5 in.)Weight 18.7 kg (41.2 lb.) 28 kg (61.7 lb.)Input voltage Rated voltage: 100 to 240 VAC; 50/60 HzMax. voltage: 85 to 264 VAC; 50/60 HzMax. current: 4.0A/2.0A/2.0A (3Com Router6080/6040)Max. power 126 W 213 WOperating temperature 0 to 40o C (32°F to 104°F)Relative humidity(non-condensing)5 to 90%