HP Power over Ethernet (PoE/PoE+) Planning and Implementation Guide

Table 9-2. Maximum PoE Power Available with 575W PSU in HP 640 RPS/EPS
Number of
ports enabled
in the zone
For 2920 Switch with 575W PSU
and 640 RPS/EPS with 575W PSU
For 2920 Switch with 1050W PSU
and 640 RPS/EPS with 575W PSU
PoE from
640 RPS/EPS
PSU
PoE from
switch PSU
Total PoE PoE from
640 RPS/EPS
PSU
PoE from
switch PSU
Total PoE
1 port
(zones 1,2, or 3)
370W 370W 740W 0W
(not supported)
The PSU in the
640 RPS/EPS
must have equal to
or greater power
(Watts) than the
PSU in the switch
(see Table 3-2)
740W 740W
2 ports
(zones 1, 2, or 3)
140W 370W 510W 740W 740W
3 ports
(zone 1 only)
60W 370W 430W 740W 740W
4 ports
(zone 1 only)
0W 370W 370W 740W 740W
Table 9-3. Maximum PoE Power Available with 1050W PSU in HP 640 RPS/EPS Zone
Number of
ports enabled
in the zone
For 2920 Switch with 575W PSU
and 640 RPS/EPS with 1050W PSU
For 2920 Switch with 1050W PSU
and 640 RPS/EPS with 1050W PSU
PoE from
640 RPS/EPS
PSU
PoE from
switch PSU
Total PoE PoE from
640 RPS/EPS
PSU
PoE from
switch PSU
Total PoE
1 port
(zones 1,2, or 3)
700W 370W 1070W 700W 740W 1440W
2 ports
(zones 1, 2, or 3)
370W 370W 740W 370W 740W 1110W
3 ports
(zone 1 only)
130W 370W 500W 130W 740W 870W
4 ports
(zone 1 only)
60W 370W 430W 60W 740W 800W