Asus P5QL-I SI User Manual - Page 21

Internal connectors

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6. USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports are available for connecting USB 2.0 devices. 7. USB 2.0 ports 3 and 4. These two 4-pin Universal Serial Bus (USB) ports are available for connecting USB 2.0 devices. 8. USB 2.0 ports 5 and 6. These two 4-pin Universal Serial Bus (USB) ports are available for connecting USB 2.0 devices. 9. COM port. This port is for pointing devices or other serial devices. 10. PS/2 keyboard port (purple). This port is for a PS/2 keyboard. 1.7.2 Internal connectors 1. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V) These connectors are for ATX power supply plugs. The power supply plugs are designed to fit these connectors in only one orientation. Find the proper orientation and push down firmly until the connectors completely fit. • For a fully configured system, we recommend that you use a power supply unit (PSU) that complies with ATX 12 V Specification 2.0 (or later version) and provides a minimum power of 300 W. • Do not forget to connect the 4-pin ATX12V power plug. Otherwise, the system will not boot. • We recommend that you use a PSU with a higher power output when configuring a system with more power-consuming devices or when you intend to install additional devices. The system may become unstable or may not boot up if the power is inadequate. 1-12 Chapter 1: Product introduction

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1-12
Chapter 1: Product introduction
6.
USB 2.0 ports 1 and 2.
These two 4-pin Universal Serial Bus (USB) ports are
available for connecting USB 2.0 devices.
7.
USB 2.0 ports 3 and 4.
These two 4-pin Universal Serial Bus (USB) ports are
available for connecting USB 2.0 devices.
8.
USB 2.0 ports 5 and 6.
These two 4-pin Universal Serial Bus (USB) ports are
available for connecting USB 2.0 devices.
9.
COM port
. This port is for pointing devices or other serial devices.
10.
PS/2 keyboard port (purple)
. This port is for a PS/2 keyboard.
1.7.2
Internal connectors
1.
ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)
These connectors are for ATX power supply plugs. The power supply plugs are
designed to fit these connectors in only one orientation. Find the proper orientation and
push down firmly until the connectors completely fit.
•
For a fully configured system, we recommend that you use a power supply unit (PSU)
that complies with ATX 12 V Specification 2.0 (or later version) and provides a minimum
power of 300 W.
•
Do not forget to connect the 4-pin ATX12V power plug. Otherwise, the system will not
boot.
•
We recommend that you use a PSU with a higher power output when configuring a
system with more power-consuming devices or when you intend to install additional
devices. The system may become unstable or may not boot up if the power is
inadequate.