Toshiba A20-S259 Maintenance Manual - Page 17
Controller Interface EHCI and Open Host Controller Interface OHCI. The USB
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1.1 Features 1 Hardware Overview q Display The following displays are available: • 14.1-inch XGA TFT screen, 1,024×768 pixels, 16M colors • 15.0-inch XGA TFT screen, 1,024×768 pixels, 16M colors • 15.0-inch SXGA+ TFT screen, 1,400×1,050 pixels, 16M colors A video controller contained on the north bridge and 4MB, 8MB, 16MB or 32MB of SMA VRAM enable an external monitor with an RGB cable to display 64k colors at a resolution of 1,600 x 1,200 pixels. q Batteries The computer has two batteries: a lithium- ion main battery pack and RTC battery (that backs up the Real Time Clock and CMOS memory). q Slot for optional memory Two DDR-SDRAM (PC2100) slots are available for 128MB, 256MB, 512MB and 1GB memory modules, consisting of SDRAM chips. q Universal Serial Bus (USB) The computer comes with three USB 2.0 ports that comply with Enhanced Host Controller Interface (EHCI) and Open Host Controller Interface (OHCI). The USB enables daisy-chain connection of up to 127 USB-equipped devices and 480Mbps serial data transfer. It is designed for easy configuration by a Plug-and-Play operating system and provides hot insertion/ejection capability. q Infrared port The infrared port is compatible with Fast InfraRed (FIR) standards enabling cableless 1.15 Mbps, 4 Mbps, 115.2 kbps, 57.6 kbps, 38.4 kbps, 19.2 kbps or 9.6 kbps data transfer with Infrared Data Association (IrDA) 1.1 compatible external devices. q Internal LAN The computer is equipped with LAN circuits that support Ethernet LAN (10 megabits per second, 10BASE-T) and Fast Ethernet LAN (100 mega bits per second, 100 BASE-Tx). It also supports Wakeup on LAN (WOL) and Magic Packet. Satellite A20 Maintenance Manual (960-444) 1-3