12-Port Ethernet Switch

12-Port Ethernet Switch

Module ES1 - 12-port Ethernet Switch

The ES1 is NAI’s latest generation serial communications, 12-port* Ethernet Switch Module. This unmanaged switch is used on our multifunction embedded boards and SBCs.


  • IEEE 802.3ab (1000Base-T Gig-E)
  • IEEE 802.3u (100Base-TX Fast Ethernet)
  • IEEE 802.3i (10Base-T Ethernet)
  • IEEE 802.3x (Flow control/full and half duplex)


  • Broadcom® 53312S
  • Rear I/O support
  • Non-blocking, Gig-E, fully integrated switch fabric with 4 MB packet buffer memory
  • Integrated MACs (IEEE 802.x compliant) with support for 9600-byte jumbo frames
  • High-performance, look-up engine with support for up to 8 K unicast MAC address entries
  • Automatic learning and aging tags
  • IPv4 and IPv6 traffic class support
  • Up to 12 ports available for external Ethernet communication/connectivity
  • 2 ports (of 12) for motherboard and/or processor communication/connectivity (if supported)
  • Port segregating/partitioning options available (i.e., separate 6/6 ports for 2x independent networks)
  • For layer 3 support, please contact factory

* dependent upon platform

Power:    +5 VDC @ 1200 mA. (typ. quiescent)
                Add 50 mA per active port (est. typ. full duty cycle)
Ground:  Isolated signals
Weight:  2 oz. (56 g)

Advanced release, contact factory.

ES1 Diagram




Function module(s) featured in products below:

ModelBoard TypeDimensions w/ Connectors (w x h x d)Volume w/ Connectors (in3)Weight / lbs (fully populated)Est. Typ. Power Dissipation (W)EthernetSwitch Type
NIU2A-ES2Gig-E Switch7.0" x 3.0" x 2.5"52.5< 2.75 28 Up to 16x Base-T Gb, 4x Fiber Optic option, and 1x Gb and 1x RS-232 for maintenanceManaged
ModelForm FactorFront Panel TypeInternal ReferenceResolutionAccuracySignal Voltage RangeReference Voltage RangeFrequency RangeInterfacesOther
8810ABench & RackmountHigh-Res Touch ScreenOptional 2.2 VA0.0001°Up to 0.0015°1 to 90 VL-L AutoRanging2 to 115 Vrms47Hz to 20 kHzEthernet, USB, IEEE-488 and Parallel PortsTwo Speed Operation, Auto Phase Correction, Velocity & DC Angle Output