The T2100 Series computer system units consist of the following features: ❑ Microprocessor The SL Enhanced Intel 486DX2-50 microprocessor operates at 50 MHz, 3.3 Volts. ❑ Math coprocessor The math coprocessor is stored in the i486DX2 microprocessor. ❑ Cache memory Eight (8) KB of cache memory is stored in the i486DX2 microprocessor. ❑ Disk storage The T2100 has an internal 260 MB HDD. A 3.5-inch Floppy Disk Drive (FDD) supports 2 HD floppy disks (1.44 Mbytes) and 2DD floppy disks (720 Kbytes). ❑ Memory The T2100 comes standard with 4 MB of CMOS Random Access Memory (RAM), 3.3 Volts. This includes 640 KB of conventional memory with 3,264 KB of extended memory for the T2100 with the Lotus/Intel/Microsoft Expanded Memory Specifications (LIM-EMS). ❑ Monochrome LCD (T2100) ❑ Keyboard An easy-to-use 82/84-key enhanced keyboard with full-size keys and standard spacing is compatible with IBM standard software. The computer's keyboard supports software that uses a 101- or 102-key enhanced keyboard. ❑ Batteries The T2100/T2105 Series has three different batteries: a main battery, a backup battery, and a Real Time Clock (RTC) battery. ❑ Personal Computer Memory Card International Association (PCMCIA) card slot The T2100 Series computers have two PCMCIA slots which enable you to install an MiNC Toshiba card modem or other industry-standard PCMCIA release 2.0 card. The lower slot is 5.0 mm (Type II) or 10.5 mm (Type III). The upper slot is 5.0 mm (Type II). ❑ Parallel port The Centronics-compatible parallel interface port supports the Enhanced Capability Port (ECP) standard. The port can be used to connect a printer or other parallel device. ❑ RS-232-C port The T2100/T2105 Series has one 9-pin serial interface port. ❑ Keyboard port The 6-pin keyboard port on the back can accommodate an IBM PS/2 keyboard. ❑ Port replicator port The port replicator port enables you to connect a port replicator to the computer. The port replicator allows connection of a PS/2 mouse, parallel port, serial port, DC IN socket, PS/2 keyboard, and external monitor