Lenovo 4155 User Manual
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Eight audio connectors on the rear panel (audio line-in connector, audio line-out
front speaker connector, microphone connector, audio line-out subwoofer/center
speaker connector, audio line-out rear speaker connector, audio line-out side
speaker connector, optical SPDIF in connector, and optical SPDIF out connector)
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Internal speaker
Connectivity
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Two 10/100/1000 Mbps integrated Ethernet connectors
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Peripheral Component Interconnect (PCI) V.90 Data/Fax modem (some models)
System management features
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Ability to store POST hardware test results
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Alert Standard Format (ASF) 2.0
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Automatic power-on startup
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Preboot Execution Environment (PXE)
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Remote Administration
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System Management (SM) Basic Input/Output System (BIOS) and SM software
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Wake on LAN
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Wake on Ring (in the Setup Utility program, this feature is called Serial Port
Ring Detect for an external modem)
Input/Output (I/O) features
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9-pin serial port
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USB connectors (eight rear and two front)
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Two Ethernet connectors
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Two IEEE 1394 connectors (one on the front panel and one on the rear panel)
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eSATA connector
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VGA or DVI monitor connector (requires video card)
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Eight audio connectors on the rear panel (audio line-in connector, audio line-out
front speaker connector, microphone connector, audio line-out subwoofer/center
speaker connector, audio line-out rear speaker connector, audio line-out side
speaker connector, optical SPDIF in connector, and optical SPDIF out connector)
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Two audio connectors on the front panel (microphone connector and headphone
connector)
Expansion
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Three optical drive bays
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One drive bay for either a 3.5-inch diskette drive or a card reader
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Two 32-bit PCI card slots
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One PCI Express x1 card slot
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One PCI Express x4 card slot (mechanical x16)
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Two PCI Express 2.0 x16 card slots
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Five hard disk drive bays
Power
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1060-watt auto-sensing power supply
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Automatic 50/60 Hz input frequency switching
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Advanced Configuration and Power Interface (ACPI) support
Chapter 3. Setting up your computer
15