HP Workstation x4000 hp workstation x4000 - Technical Reference manual - Windo - Page 31
Super I/O Chip (National PC87366), LAN Chip (Intel 82550), System Chipset,
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NOTE System Board System Chipset The x4000 Workstation is optimized for use with SCSI hard disk drives. IDE hard disk drives are not tested or recommended in the x4000. • Two external USB ports which are USB 1.1 compliant ports with over-current protection and support for wake up from S1 (sleep) state (USB mouse and keyboard are not supported). • Audio • Super I/0 • SMBUS Super I/O Chip (National PC87366) The Super I/O provides the interface to: • Two serial ports (A and B). The serial port interface voltage levels are established by DS14185A communication port interface chips. • One EPP parallel port • Floppy disk drive • PS2 Keyboard • PS2 Mouse LAN Chip (Intel 82550) The LAN chip: • Is 10/100 Base T • Is IEEE 802.3 compliant • Is on the 33 MHz, 32-bit PCI bus • Supports Wake-on-LAN via the PME# signal • Stores configuration information on attached SEEPROM chip Chapter 2 31
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