This product is either discontinued or we cannot get that from suppliers.
Ethernet Switch, Port / Expansion Slot 48 x Gigabit Ethernet Network, 4 x Gigabit Ethernet Expansion Slot, Expansion Slots-4, Twisted Pair, Optical Fiber, Network 10/100/1000Base-T, 1000Base-X, Compatible Rack Unit 1U, MTBF 540754.80 Hour, Flash Memory 16MB, Input Voltage 120 V AC, 230 V AC, Standard Memory 128MB.
HPE OfficeConnect 1820 Series switches are basic Gigabit web managed "smart" Layer 2 switches supporting Virtual LANs (VLANs) and Link Aggregation, designed for small businesses looking for key features in an easy to administer solution.