User’s Manual

17. Air vents. These vents allow air ventilation.
DO NOT block the air vents on the chassis. Always provide proper ventilation for your computer.
18. VGA port. This port is for VGA-compatible devices such as a VGA monitor. Your desktop PC is
equipped with an additional graphics card, and this VGA port is disabled by default.
Activity/Link LED Speed LED
Status Description Status Description
OFF No link OFF 10Mbps connection
ORANGE Linked ORANGE 100Mbps connection
BLINKING Data activity GREEN 1Gbps connection
LAN port
SPEED LED
ACT/LINK LED
16. LAN (RJ-45) port. This port allows Gigabit connection to a Local Area Network (LAN)
through a network hub.
LAN port LED indications
13. Serial port (optional). This 9-pin COM port is for pointing devices or other serial devices.
14. Pad lock slot. This pad lock slot allows your PC to be secured using a standard pad lock.
15. Parallel port (optional). This 25-pin port connects a parallel printer, a scanner, or other
devices.
ASUS Desktop PC 21
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ENGLISH