HP 5400zl Series Technical Overview page 25

The table below shows examples of the maximum number of PoE ports that can be supported by the
two 3500yl switch models. One column shows the maximum number of PoE ports at full power (Class
0 – 15.4 watts) and the other column shows the maximum number of PoE ports at typical phone power
(8 watts).
For environments needing more PoE power, the HP ProCurve 620 Redundant/External Power Supply
can be used. It doubles the available PoE power from 398W to 796W for up to two 3500yl switches.
The HP ProCurve 620 also provides redundant system power for up to two 3500yl switches.
Switch
model
3500yl-24G-PWR *
3500yl-48G-PWR *
3500yl-48G-PWR +
HP ProCurve 620
Table 4. Examples of maximum number of PoE ports for 3500yl series
* Also number of ports that are 1+1 with the use of the HP ProCurve 620 Redundant/External Power
Supply
Total PoE power
(watts)
398
398
796
Number of PoE
ports at 15.4 W
24
24
48
Number of PoE
ports at 8 W
24
46
48
25