USB power
Some 4820 SurePoint Solution models offering USB connections can be powered
from the POW terminal (see “Power usage” on page 9). The powered USB cable
provides approximately 12V dc. If your 4820 SurePoint Solution is powered by a
USB cable, test the pin voltages to verify that they are correct. Table 13 lists the
pinouts for the USB connector and the acceptable voltages for the power provided
by the cable.
Table 13. Powered USB connector pinouts
Pin (see Figure 60) Voltage (dc)
1 +4.75 to +5.25
2, 3 Data
4, 5 Ground
6 +10.8 to +12.6
Figure 60. Powered USB connector and pin numbers
Update November 2005
80 4820 Planning, Installation and Service Guide
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