S3900-24T4S-R, 24-Port Gigabit Ethernet L2+ Switch, 24 x Gigabit RJ45, with 4 x 10Gb SFP+ Uplinks, Stackable Switch, Fanless. 24x Gigabit RJ45 and 4x 10G SFP+ Ports with Non-blocking Line-rate. Information from FS website.
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