Compaq Presario 3000 Series Operation And Reference Manual page 40

Load Level (LEDs 11-14)
LED Color
11 Red Load on the UPS exceeds the maximum power available.
12 Green Load on the UPS is approximately 67% to 100% of the
maximum power available.
(LEDs 13 and 14 are also green)
13 Green Load on the UPS is approximately 66% of the maximum power
available.
(LED 14 is also green)
14 Green Load on the UPS is approximately 33% of the maximum power
available.
Communication (LED 15)
LED Color
15 Green The communication link between the UPS and the host
computer is active.
Flashing Data is being transferred between the UPS and the host
Green computer.
On (LED 16)
If LED 16 is green, power is available at the UPS output receptacles.
Table 3-5
Load Level LEDs
Meaning
Table 3-6
Communication LED
Meaning
Operation 3-7