Asus P4B-LX - Manual (Page 17)

ASUS P4B-LX motherboard user guide 1-5
IEEE-1394 connector. This 6-pin digital interface supports
electronic devices such as DV camcorders, digital cameras,
scanners, and printers.
Optical SPDIF connector. This connector supports optical SPDIF
devices that provide 5.1-channel surround sound and 3D audio.
Parallel port. This 25-pin port connects a parallel printer, a
scanner, or other devices.
USB ports. These two 4-pin Universal Serial Bus (USB) ports are
available for connecting USB devices such as a mouse and PDA.
RJ-45 port. This port allows connection to a Local Area Network
(LAN) through a network hub.
PS/2 keyboard port. This purple 6-pin connector is for a PS/2
keyboard.
PS/2 mouse port. This green 6-pin connector is for a PS/2 mouse.
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Figure 1-2 Pre-installed Heatsink Retention Module Base
This motherboard is shipped with the heatsink retention module base
already installed. This module should fit the retention mechanism that
comes with a boxed CPU.
You do not have to remove the retention module base when installing
the CPU or installing other motherboard components.
1.3.2 Pre-installed accessory
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Retention Module Base