[. . . ] Key component upgradeability guards your notebook from becoming obsolete. 4. 1 External Monitor To show graphical effects on a larger display, open the port ). cover and connect an external monitor to the CRT port ( Read the monitor manual for additional instructions. 4-1 Options 4. 2 External Keyboard and Keypad This notebook has a keyboard with full-sized keys and an embedded keypad. If you feel more comfortable using a desktop keyboard, you can install a PS/2-compatible external keyboard. [. . . ] If you feel more comfortable using a desktop keyboard, you can install a PS/2-compatible external keyboard. You can also use a 17-key numeric keypad for numbersensitive data entry applications. To connect the keypad, ) at plug in the keypad connector to the PS/2 port ( the rear of the notebook. ( 4-2 Options 4. 3 External Pointing Device This notebook accepts either a PS/2-compatible or serial mouse or similar pointing device. The built-in touchpad works alternately with an external PS/2 mouse which is hot-pluggable. To use a PS/2compatible mouse, simply plug it into the PS/2 port ( ). If you use a serial mouse, open the port cover and plug it ). To enable the serial mouse, use into the serial port ( the Add New Hardware tool in the Windows 95 Control Panel. 4-3 Options 4. 4 Printer This notebook supports both serial and parallel printers. Improper installation may damage the memory module or the notebook, or cause a malfunction. 4-8 Options The memory slots are accessible directly under the keyboard. Simply unlatch and lift the keyboard to expose the metal plate covering the memory slot. 2. Then (1) insert the DIMM into the slot and (2) press down to secure the DIMM. 4. Re-attached the metal plate on the memory slot. 4-9 Options After installing the memory modules, the system automatically detects and reconfigures the total memory size during the POST routines. 4. 8. 2 Hard Disk Upgrade You can upgrade your hard disk with a higher capacity drive when you need more storage space. The notebook uses a 12. 7mm, 2. 5-inch Enhanced-IDE hard disk that is autodetected or user-defined. The following table shows the available, supported hard disks. Vendor IBM Hitachi Hitachi Model DMCA21440 DK225A-14 DK225A-21 Capacity 1. 44 GB 1. 44 GB 2. 1 GB Use the blank spaces to record additional hard disks that will be available in the future. Upgrading the Hard Disk This notebook has a modular design that enables easy hard disk drive upgrades. We recommend that you seek the help of a qualified service technician if you decide to perform an upgrade. [. . . ] The following table shows the available, supported hard disks. Vendor IBM Hitachi Hitachi Model DMCA21440 DK225A-14 DK225A-21 Capacity 1. 44 GB 1. 44 GB 2. 1 GB Use the blank spaces to record additional hard disks that will be available in the future. Upgrading the Hard Disk This notebook has a modular design that enables easy hard disk drive upgrades. We recommend that you seek the help of a qualified service technician if you decide to perform an upgrade. Contact your dealer for more information. 4-10 Options Follow these steps to remove and install the hard disk. 1. Turn off the computer, then turn the computer over on its base. [. . . ]