D-Link DSS-200G-28MPP/E 28-Port Desktop Gigabit PoE Switch

28-Port Gigabit PoE Switch Desktop Model Highlights

• High PoE budget: 518 W total with up to 90 W per port on ports 1–8 and 30 W on ports 9–24
• Surge protection: 6 kV surge protection on all PoE ports guards against electrical transients
• Extended reach: Extend mode drives ports 1–8 at up to 250 m and 10 Mbps via DIP switch or web GUI
• DIP-switch modes: QoS port priority, per-port traffic isolation, PD-Alive, and STP selectable without software
• Energy-efficient Ethernet: IEEE 802.3az compliance reduces power draw on inactive links

Performance & Connectivity

The switch provides a 56 Gbps switching capacity and a maximum forwarding rate of 41.67 Mpps across its 28 ports. The MAC address table accommodates 8,000 entries, and a 4.1 Mbit packet buffer handles traffic bursts. Twenty-four 10/100/1000 Mbps PoE ports serve powered devices, while four combo 1000 Mbps ports offer uplink flexibility. Auto-negotiation and automatic MDI/MDIX configuration simplify cabling, and IEEE 802.3x flow control supports full-duplex operation.

PoE Power & Surge Protection

Ports 1 through 8 support IEEE 802.3bt with up to 90 W per port, and ports 9 through 24 support IEEE 802.3af/at with up to 30 W per port. The total PoE power budget is 518 W. All 24 PoE ports carry 6 kV surge protection against electrical transients. Maximum power consumption reaches 579.3 W with PoE active and 23.52 W with PoE disabled, while standby consumption is 15.19 W. An internal 100–240 V AC power supply handles 50–60 Hz input.

DIP Switch Operating Modes

A hardware DIP switch provides four operating modes without requiring software configuration. QoS mode applies port priority to ports 1–24, and Isolate mode enables per-port traffic isolation on the same port range. PD-Alive monitors powered-device status on ports 1–24, and STP mode applies Spanning Tree Protocol to the combo ports 25–28. The Extend mode, configurable via DIP switch or web GUI, drives ports 1–8 at up to 250 m and 10 Mbps for long-distance device connections.

Design & Environmental

The switch occupies a 19-inch rackmount form factor at 1U height, measuring 440 × 330 × 44 mm and weighing 4.71 kg. Two internal fans provide cooling, producing 56 dB(A) of acoustic output, and maximum heat dissipation is 209.16 BTU/hr. The unit operates from -5 to 50 °C at 0–95% non-condensing humidity and stores from -40 to 70 °C. An MTBF of 289,075 hours underscores long-term reliability. LED indicators report power status per device, link/activity/speed per port, and alarm conditions. The switch incorporates DDR3 128 MB of CPU memory and 32 MB of flash memory.

Compliance & Standards

The switch carries FCC, IC, CE, BSMI, cUL, UL, LVD, and CB certifications. It complies with IEEE 802.3, 802.3u, 802.3ab, 802.3af, 802.3at, 802.3bt, 802.3x, and 802.3az standards, supporting both half- and full-duplex operation across all ports.