Acer Altos 500 Altos 500 Service Guide - Page 34

It also supports the USB (Universal Serial Bus) connector, and other standard features such as two UART NS16C550 serial ports, one enhanced parallel port with an Enhanced Parallel Port (EPP)/Extended Capabilities Port (ECP) feature, a diskette drive interface, and two embedded hard disk interfaces. The board also includes a built-in 10/100 Mb/s Intel 82558 LAN chip that supports Wake-On-LAN (WOL) (only for models with LAN feature). Major Components The system board has the following major components: • Exclusive slot for Intel Pentium II processor • Three DIMM sockets that accept 16-, 32-, 64- and 128-MB DIMMs • Two ISA, four PCI (five PCI for boards without LAN), and one AGP expansion slots (including one PCI/ISA shared slot) • 256-KB Flash ROM for system BIOS • 10/100 Mb/s Intel 82558 LAN chip that supports Wake-On-LAN (WOL) (manufacturing option) • Enhanced IDE hard disk and diskette drive interface • PS2 power connector • System controller chipset • External ports: • USB connector • RJ-45 jack (manufacturing option) • Parallel port • PS/2-compatible keyboard port • PS/2-compatible mouse port • Serial port 1 and 2 2-2 Altos 500 System Guide