The Dell Inspiron 3000 series is a family of expandable multimedia portable computers that use the Intel® Pentium® and Pentium II microprocessors with MMXTM technology. This chapter provides an overview of the components and subsystems of these computers. The individual model names within the Inspiron 3000 series indicate the type and operating frequency of the microprocessor and the display used in the computer. In addition to the standard features found in IBM -compatible portable computers, the Dell Inspiron 3000 series computers include the following new and/ or advanced features: •32 MB of SDRAM consisting of 16 MB of nonremovable main memory on the main board and a 16-MB memory module in one of the two memory module sockets. The memory capacity can be increased up to 144 MB by installing 16-, 32-, or 64-MB 3.3-V memory modules in the memory module sockets on the main board. A 12.1-inch active-matrix SVGA display on Inspiron 3200 D233ST and on the Inspiron 3000 M166ST, M200ST, and M233ST; a 13.3-inch active matrix XGA display on the Inspiron 3000 M233XT and M266XT, and the Inspiron 3200 D233XT and D266XT. 40-WH lithium ion battery (eight cells). 512-KB SRAM level-2 external cache and 32-KB internal cache. (The Inspiron 3000 M166ST has a 256-KB SRAM level-2 external cache.) NeoMagic 2160 video controller supporting all video features with a PCI local bus on Inspiron 3000 M166ST, M200ST, M233ST, M233XT, and M266XT. NeoMagic 2160B video controller supporting all video features with a PCI local bus on the Inspiron 3200 D233ST, D233XT and D266XT. Intel 430TX PCIset for system and PCI controller on the Inspiron 3000 M166ST, M200ST, M233ST, M233XT, and M266XT; Intel 440BX PCIset for system and PCI controller on the Inspiron 3200 D233ST, D233XT and D266XT. Built-in microphone and jacks for connecting external speakers, micro- phones, and headphones. Two new diagnostics tests (infrared and audio). An options bay that lets users replace the diskette drive with a secondary lithium ion battery, CD-ROM drive, or DVD-ROM drive. If the computer is booted with a diskette drive or battery in the options bay, you must reboot after installing the CD-ROM or DVD-ROM drive in the options bay. Built-in serial IrDA 1.1-compliant infrared transmitter/receiver, effective to 1 m (3.3 ft). Support for connecting an external diskette drive to the parallel connector on the I/O panel. Universal Serial Bus (USB), which provides a single connection point for multiple USB-compliant devices such as mice, printers, keyboards, and computer speakers. These devices can be connected and disconnected while the system is running.