Lenovo 10120/90A0 [K450 NON-ES] Personal Computer User Manual


 
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User Guide
12V power connector Battery
Microprocessor and heat sink Microprocessor fan header
Memory slots (4) Thermal sensor header
Mini PCI-E slot Power connector
eSATA connector Power fan header
Solid state disk power connector
(Optional)
LPC debug connector
SATA connectors (4) Serial (COM2) connector
Front panel connector SPI debug connector
Mode switch connector Front USB connector (2)
ROM socket Clear CMOS jumper
Front USB header PCI express X 1 adapter slots (3)
Front audio connector PCI express X 16 adapter slot
System fan header
Replacing hardware
Attention: Do not remove the computer cover or attempt any repair
before reading the “Important safety information” in the Safety and
Warranty Guide that was included with your computer or in the Hardware
Maintenance Manual(HMM)forthecomputer.Toobtaincopiesofthe
Safety and Warranty Guide or HMM,gototheSupportWebsiteat
http://support.lenovo.com.
General information
Pre-disassembly instructions
Before proceeding with the disassembly procedure, make sure that you do the
following:
1. Turn off the power to the system and all peripherals.
2. Unplug all power and signal cables from the computer.
3. Place the system on a flat, stable surface.