Chapter 3: Computer Assembly

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MotherBoard socket connectors:

  • P1 20 and 24 pin
  • P2 (AUX) – 4 and 6 pin
  • Berg – 4 pin floppy connector
  • 3 and 4 pin (PWM) fan connectors
  • 40 Pin IDE connectors (40 or 80 conductors) data
  • 34 pin floppy (A drive at end of cable connection to 1st floppy)

Front Panel connectors:

  • pin 1 is marked with a plus (‘+’)
  • +5 volt ping for the system speaker
  • USB: 9 or 10 pins sockets feeding a pair of (5 volts) ports
  • USB3 has additional pins

Common Beep Codes:

  • 1 short – Normal Post
  • 2 short – Post Error
  • 1 long 2 short – Video

Common Bios Categories:

  • Main
  • Advanced
  • Boot
  • Security
  • Power
  • JUSTw00t – voltage and clock
  • Exit

Bios Passwords:

  • Supervisor -
  • USER
    • Full Access
    • Limited
    • View Only
    • No Access

Common Bios Features:

  • Drive Encryption
  • TPM (Trusted Platform Module) for encryption keys and passwords
  • LoJack (Persistence Module)
  • Lock computer remotely
  • Display messages to enable a lost device to be returned to the owner
  • Geosync location
  • Intrusion detection (case has been opened)

Common Bios fan speed profiles:

  • Standard
  • Turbo
  • Silent
  • Manual

Common Bios diagnostics:

  • Start test
  • Hard Drive Test
  • Memory Text (memtestX86)
  • Battery Test

CPU socket Types:

  • SEC (Single-Edge Connector)
  • LIF (Low-Insertion Force)
  • ZIF (Zero Force Insertion)
    • PGA (Pin Grid Array)
    • LGA (Land Grid Array)

System Board Jumper Blocks:

  • CPU voltage
  • CPU speed
  • Bus speed
  • Cache sisze and type
  • Flash BIOS enabled
  • Clear CMOS
  • Memory size

CPU Compatibility:

  • Socket
  • Chipset (system board)
  • Power Supply
  • RAM


Chapter 3 Questions

1.

PS2 or
USB

2.

None – different memory types (i.e DRAM, DDR, DDR2 & DDR3) are not electronically or physically (memory slots) compatible.

3.

Slowest – memory sticks of the same type (i.e DDR2) may be mix together if the speed ratings differ. However, the channel will conform to the lower rated module(s).

4.

Vendor Website – The manufactures web site will contain instructions for the update procedure(s).

5.

PATA/IDE – a maximum of two drives are allowed per controller.

6.

Isopropyl alcohol

7.

Overclocking

8.

Lojack – consists of 2 components:
1. Persistence Module … installed in the BIOS
2. Application agent … software program installed by the user.

When the Application agent is installed, the Persistence Module is activated and the system is tracked by Absolute Software’s Monitoring center. The following are possible:

  • Lock Computer Remotely
  • Display a message to that a lost computer can be returned to the owner
  • Delete data
  • geosynchronous location

9.

TPM – Trusted Platform Module

10.

20 or 24 pins for ATX Power Supply’s main ‘P1′ connector.
2010-08-24_043412_connector_atx_pinout

11.

Standoffs


12.

6 links