120
On the Optional Port Replicator:
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One 25-pin D-SUB connector for parallel input/output devices; Bi-directional, output only or ECP
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One 15-pin D-SUB connector for VGA external monitor (see Display specifications)
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One 9-pin D-SUB connector for RS-232C serial input/output devices
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Four USB 2.0 connectors for input/output devices
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One DVI port
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One e-SATA port
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One LAN (RJ-45) connector
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One DC-in connector
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One headphone/line-out jack
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One power/suspend/resume button
Keyboard
Built-in keyboard with all functions of 101 key PS/2 compatible keyboards.
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Total number of keys: 84
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Function keys: F1 through F12
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Feature extension key: Fn
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Two Windows keys: one Start key, one Application key
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Key pitch: 19 mm
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Key stroke: 2.7 mm
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Built-in Touchpad pointing device with left and right buttons and fingerprint sensor.
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Quick Point cursor control button
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Built-in Palm Rest
External Keyboard and/or Mouse Support
USB-compatible