IBM A21i Maintenance Manual - Page 12

• PS/2 keyboard connector • Ethernet connector • Monitor connector • Three audio connectors (line in, line out, and microphone) • Front connectors on some small desktops (S/PDIF, microphone, and headphone) • Front IEEE 1394 connector (some small desktop models) Expansion • Drive bays - Small desktop model: Three - Desktop model: Four - Microtower model: Four • 32-bit PCI expansion slots - Small desktop model: Three (expansion cards must be low profile) - Desktop model: Three - Microtower model: Three Power • 95 W, 120 W, or 155 W power supply with manual voltage selection switch • Automatic 50/60 Hz input frequency switching • Advanced Power Management support • Advanced Configuration and Power Interface (ACPI) support Security features • Power-on and administrator passwords • Support for the addition of a Rope Clip and lockable cable (varies by mechanical chassis) • Startup sequence control • Startup without diskette drive, keyboard, or mouse • Unattended start mode • Diskette and hard disk I/O control • Serial and parallel port I/O control • Security profile by device IBM preinstalled software Your computer might come with preinstalled software. If it does, an operating system, device drivers to support built-in features, and other support programs are included. Operating systems (supported) • Microsoft® Windows® Millennium Edition (Me) • Microsoft Windows 2000 Professional • Microsoft Windows 98 Second Edition Operating systems (tested for compatibility)1 • Microsoft Windows 95 1.The operating systems listed here are being tested for compatibility at the time this publication goes to press. Additional operating systems might be identified by IBM as compatible with your computer following the publication of this booklet. Corrections and additions to this list are subject to change. To determine if an operating system has been tested for compatibility, check the Web site of the operating system vendor. 4 IBM : Hardware Maintenance Manual