GM2 - Octal Gigabit Ethernet Rear I/O Card (Product Discontinued)

The GM2 is a mezzanine card which is plugged onto CompactPCI Serial CPU boards to implement eight Ethernet interfaces on the backplane.

The CompactPCI Serial standard defines up to eight Ethernet interfaces which can be connected in a star or in full mesh architecture via the backplane and which equip the CPU board with even more options for multi computing and computer clusters. The GM2 is used to implement eight Gigabit Ethernet interfaces which are led to the backplane via CompactPCI Serial connectorP6. All eight interfaces are controlled by two Ethernet controllers which support the IEEE 802.3x standard.

In addition, the GM2 offers the possibility to plug a microSD card.


  • Mezzanine card for CompactPCI Serial CPU boards
  • Eight 10/100/1000Base-T Ethernet channels
  • Support of full mesh and star architecture
  • Wake-on-LAN
  • Fully integrated to comply with IEEE802.3u
  • TCP/IP checksum offload


Ethernet Interfaces
  • Eight 10/100/1000Base-T interfaces
  • IEEE802.3x support
    • Full-duplex flow control
    • 400 Mbit/s data transfer rate for each interface when all interfaces are used simultaneously
    • 600 Mbit/s data transfer rate for each interface when two interfaces are used simultaneously
  • TCP/IP checksum offload
  • Wake-on-LAN support
MicroSD card slot
  • Support of class 6 devices
  • Data transfer rate up to 48 Mbit/s (depends on media and host)
CompactPCI Serial
  • Compliance with CompactPCI Serial PICMG CPCI-S.0 Specification
  • Ethernet interfaces via CompactPCI Serial connector P6
PCI Express
  • One x1 link to operate the two Ethernet controllers
  • PCIe 2.0 support
  • Data rate 1000 MB/s in each direction (5 Gbit/s per lane)
Electrical Specifications
Supply voltage/power consumption:
  • +3.3 V (-10%/+10%) from CPU board, 13.74 W max.
Mechanical Specifications
  • Dimensions: 80 mm x 95 mm (without P6 connector)
  • Weight: 49 g
Environmental Specifications
  • Temperature range (operation):
    • -40..+55°C
    • Airflow: min. 1.5 m/s
  • Temperature range (storage): -40..+55°C
  • Relative humidity (operation): max. 95% non-condensing
  • Relative humidity (storage): max. 95% non-condensing
  • Altitude: -300 m to +3,000 m
  • Shock: 50 m/s², 30 ms
  • Vibration (Function): 1 m/s², 5 Hz - 150 Hz
  • Vibration (Lifetime): 7.9 m/s², 5 Hz - 150 Hz
  • Conformal coating on request
1 463 691 h @ 40°C according to IEC/TR 62380 (RDF 2000)
PCB manufactured with a flammability rating of UL94V-0 by UL recognized manufacturers
Conforming to EN 55022 (radio disturbance)
Software Support
  • Windows
  • Linux