This product is either discontinued or we cannot get that from suppliers.
Device Type: Switch - 28 ports - L3 - Managed - stackable, Enclosure Type: Desktop, rack-mountable 1U, Subtype: Gigabit Ethernet, Jumbo Frame Support: 9000 bytes, Max Units In A Stack: 6, Power Device: Internal power supply, Voltage Required: AC 120/230 V (50/60 Hz), Power Consumption Operational: 22.3 Watt, Compliant Standards: VCCI, C-Tick, BSMI, cUL, CB, CCC, FCC.
The D-Link DGS-1510 Series is the latest generation of Smart Managed switches with 10G capability, available with 16, 24, or 48 10/100/1000 Mbps ports plus additional fiber ports for physical stacking or uplinks.