28-Port 10/100/1000Mbps Gigabit Stackable SmartPro PoE Switch including 2 SFP ports and 2 x 10G SFP+ ports
- 24 x 10/100/1000Mbps Auto-Negotiating Ports
- 2 x Mini-GBIC SFP ports
- 2 x 10G SFP+ ports
- Physical Stacking up to 6 units per stack. Stacking Bandwidth of 40Gb. Topology Linear or Ring.
- Support IEEE 802.3af and 802.3at (Support legacy mode)
- Up to 15.4W per port (PoE), Up to 30W per port (PoE+)
- 193W total PoE power budget
- Auto discover the connection of PD and immediately provides power
- AT: Auto disable port if the output power is over 31.2W(+/-2%)
- AF: Auto disable port if the output power is over 16.2W(+/-2%)
- Auto disable port if the port overload detection range (ICUT parameter) is 50V~57V.
- D-Link Green 3.0, 802.3az
- Virtual stacking
- Static route 
- IPv6 Management/Ready Logo
- Half-/Full-Duplex, auto-negotiation, Auto MDI/MDIX
- IEEE 802.3x Flow Control
- 802.3ad Link Aggregation
- Asymmetric VLAN, Auto Voice VLAN, GVRP
- 802.1p priority queues
- MAC/IP filtering
- MAC/IP-based ACL
- 802.1X port-base Access Control, Port Security, traffic segmentation
- D-Link Safequare Engine
- Smart Console Utility, web based management, compact CLI
- D-View 6.0 support
- 19" Rackmount Installation