Quiet Fan less design (J9019B). buffer size: 384 KB. 24 x10/100 or Gigabit ports. 2x dual-personality ports; each port can be used as either an RJ-45 10/100/1000 port (IEEE 802.3 Type 10Base-T; IEEE 802.3u Type 100Base-TX; IEEE 802.3ab 1000Base-T Gigabit Ethernet) or an open miniGBIC slot (for use with mini-GBIC transceivers).
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