ECS K7VZA Manual page 37

J4: Dual color LED header
This header allows the user to install red and green LED
indicators to indicate when the computer is in Suspend to RAM
(STR) or normal. Although the values are not predefined, red
usually indicates STR and green indicates normal.
USB2: Universal Serial Bus port 3, 4 connector
This motherboard has PS/2 and USB ports installed on the rear
edge I/O port array. However, some computer cases have a
special module that mounts USB ports on the front side of the
case. If you have this kind of case, you can use the auxiliary
USB connector USB2 to connect the front-mounted ports to the
motherboard. You can use both the front and rear-mounted USB
ports at the same time.
SIR1: Serial infrared port connector
This motherboard can support a Serial Infrared (SIR) data port.
Infrared ports allow the wireless exchange of information
between your computer and similarly equipped devices such as
printers, laptops, Personal Digital Assistants (PDA), and other
desktop computers.
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