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2. Computer fan control - Wikipedia

   en.wikipedia.org/wiki/Computer_fan_control

   The sense pin is used to relay the rotation speed of the fan and the control pin is an open-drain or open-collector output, which requires a pull-up to 5 V or 3.3 V in the fan. Unlike linear voltage regulation, where the fan voltage is proportional to the speed, the fan is driven with a constant supply voltage; the speed control is performed by ...

3. Computer fan - Wikipedia

   en.wikipedia.org/wiki/Computer_fan

   These can be plugged into 3-pin headers, but will lose their fan speed control. The Molex part number of receptacle is 47054-1000. The Molex part number of individual crimp contacts is 08-50-0114. The Molex part number of the header is 47053-1000. Four-pin Molex connector This connector is used when connecting the fan directly to the power supply.

4. Berg connector - Wikipedia

   en.wikipedia.org/wiki/Berg_connector

   the two-pin Berg connectors used to connect the front panel lights, turbo switch, and reset button to the motherboard. the two-pin Berg connectors used as jumpers for motherboard configuration. Floppy drive power connector

5. Pin header - Wikipedia

   en.wikipedia.org/wiki/Pin_header

   1×6 pin header (one row) 1×6 female header (one row) A pin header (or simply, header) is a form of electrical connector. A male pin header consists of one or more rows of metal pins molded into a plastic base, often 2.54 mm (0.1 in) apart, though available in many spacings. [1] Male pin headers are cost-effective due to their simplicity.

6. Computer case screws - Wikipedia

   en.wikipedia.org/wiki/Computer_case_screws

   Motherboards and other circuit boards often use a #6-32 UNC standoff. #4-40 UNC thumb screws are often found on the ends of DVI, VGA, serial and parallel connectors. More modern cases from certain manufacturers ( Dell , Gateway ) and enthusiast cases will lack screws altogether, instead utilizing a toolless design.

7. Dell Inspiron desktop computers - Wikipedia

   en.wikipedia.org/wiki/Dell_Inspiron_desktop...

   The motherboard also features four SATA 1.0 Ports, one EIDE (floppy) plug, three USB plugs for front USB, a Firewire plug, and a front audio plug. Cooling is somewhat limited, as the motherboard only provides one 4-pin PWM CPU fan plug, and one 3-pin rear fan plug. Installation of a fan controller will be required to use additional fans.

8. Small form factor PC - Wikipedia

   en.wikipedia.org/wiki/Small_form_factor_PC

   When so upgraded, the repurposed fan would be connected to the motherboard's case fan connector (3-pin) while the new CPU fan would be connected to the motherboard's CPU fan connector (4-pin). AOpen Inc. produced a stackable S120 [26] case, allowing the user to stack up to four components vertically or horizontally. These layers can be for add ...

9. Power supply unit (computer) - Wikipedia

   en.wikipedia.org/wiki/Power_supply_unit_(computer)

   A power supply with a 24-pin connector can be used on a motherboard with a 20-pin connector. In cases where the motherboard has a 24-pin connector, some power supplies come with two connectors (one with 20-pin and other with 4-pin, i.e. 20+4-pin form) which can be used together to form the 24-pin connector.