PoE Detection Types

The following table identifies product support for the different PoE types.

Table 1. PoE type support
Product Highest PoE Standard

5320-16P-4XE

5320-16P-4XE-DC

5320-24P-8XE

5320-48P-8XE

802.3at Type 2 PoE (30W) on BASE-T ports

5420F-48P-4XE

5420F-48P-4XL

5420F-24P-4XE

802.3at Type 2 PoE (30W)

5420F-8W-16P-4XE

802.3bt Type 4 PoE (90W) on 8 ports

802.3at Type 4 PoE (30W) on 16 ports

5420F-16W-32P-4XE

5420F-16MW-32P-4XE

802.3bt Type 4 PoE (90W) on 16 ports

802.3at Type 4 PoE (30W) on 32 ports

5420M-24W-4YE

5420M-48W-4YE

802.3bt Type 4 PoE (90W)

5420M-16MW-32P-4YE

802.3bt Type 4 PoE (90W) on 16 ports

802.3at Type 4 PoE (30W) on 32 ports

5520-12MW-36W

802.3bt Type 4 PoE (90W)

5520-24W

802.3bt Type 4 PoE (90W)

5520-48W

802.3bt Type 4 PoE (90W)

5720-24MW

5720-48MW

5720-24MXW

5720-48MXW

802.3bt Type 4 PoE (90W)

The global configured detection type specifies the following versions of the IEEE standard to support. Standards are arranged from oldest (top) to newest (bottom).

Detection Type

Power Mode

802.3af

Normal

802.3af and legacy

Normal

802.3at

High

802.3at and legacy

High

802.3bt type 3

Normal

802.3bt type 4

Normal

802.3bt and legacy

Normal

The default detection type is automatically configured for the highest PoE standard supported on the switch.

Note

Note

802.3at is backwards compatible with 802.3af. Therefore, both normal power and high power devices are supported in this mode.

Changing from a newer IEEE standard to an older IEEE standard is permitted, however power delivery is interrupted during this operation, and all PoE devices are reset. There is no service interruption when changing from an older IEEE standard to a newer IEEE standard.