The Dell Latitude C540 is one of many options within the Latitude series of computers. While it was a good choice when Dell released it, today it meets only the most basic of computing needs. Perhaps the largest drawback is its now-obsolete USB 1.1 port, though if you have this laptop, there are still plenty of other good options, especially for connectivity and upgrading. Several features of the C540 were customisable by retailers or customers.
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Graphics and Display
The graphics card is an ATI Mobility RADEON 7500C. It has 32 megabytes (MB) of memory and can output a maximum resolution of 1400 by 1050 on the computer's 14.1-inch display. It outputs a maximum of 16.8 million colours.
CPU and RAM
The Dell Latitude C540 had two options for its processor: an Intel Mobile Pentium 4M or an Intel Celeron. The CPU has 8 kilobytes (KB) of Level 1 cache and 512 KB of Level 2 cache. The laptop's standard memory is 128 MB, but you can upgrade it to a maximum of 1 gigabyte (GB).
The computer has an RJ-45 port for a 100BASE-T Ethernet connection, allowing transfer speeds of up to 100 megabits per second. It also has an optional internal modem and a corresponding RJ-11 port for a phone line. It can be upgraded to have wireless networking as well; you can use an 802.11b wireless card in the Type IIIA mini-PCI card slot.
Input and Output
The C540 has one serial port and one parallel port. For video and audio, it has one VGA port, one S-video port, one microphone jack and one headphone jack. It has a single USB 1.1 port and a single PS/2 port, used for a mouse or external keyboard. It also has one infrared port. On the back, it has a 200-pin docking connector that fits Dell docking devices.
The laptop has customisable PC cards; you could get either two Type I/II PC cards or a single Type III PC card. It has a variable-capacity, upgradeable hard drive in the slot on the left-hand side. It also has a module bay, which you can use to add a CD or DVD drive, floppy drive, Zip drive, second hard drive or second battery. The audio controller is a Cirrus Logic CS4205, and it outputs to the headphone jack and to the dual 4-ohm built-in speakers. The computer has both a touchpad and a "track stick" for controlling the mouse cursor; the latter is a pressure-sensitive knob in the middle of the keyboard. When closed, the computer is 1.4 inches high, 12.5 inches wide and 9.9 inches long and weighs between 5.3 and 5.8 pounds, depending on the optional drives you may have installed.
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