I have a Cisco SG300-52P managed switch for sale. This includes the rack mountable switch itself, a power cord and a CD with a copy of the management software on it.
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This is a tested good unit, pulled from an office as part of redoing their network when our company moved in.
This switch provides power over Ethernet to run IP cameras, VoIP phones and so on, and supports 10/100/1000BASE-T RJ-45 ethernet on 48 ports, plus 4 gigabit SFP ports.
Why pay at least this much for some entry-level switch that doesn't even support PoE when you can have a real Cisco? I'm located in Brunswick, MD (about 20 minutes from Frederick) but would be willing to meet an interested buyer in Frederick or possibly even Charles Town, WV if you're out that direction.