fbCAPTURE Card fbC4G

fbCAPTURE Card fbC4G

Silicom Network Monitoring & Capturing Network Monitoring Adapter Card

Quad (4x) SFP Ports 1GE Capture Card


The Silicom Denmark fbC4G Card performs at line rate with zero packet loss. It allows for pure data capture as well as inline applications. It is a high performance OEM hardware platform intended for 4 x 1Gbit network connectivity with quad port SFP interfaces.

1 GbE Networks  are still the most widespread interfaces in networks today. The fbC4G offers direct and unhindered visibility interface into the traffic carried in these networks. Utilizing the power of FPGAs, the traffic can easily be controlled and processed to provide the insight required of a wide range of applications.

All Capture Cards from Silicom Denmark are part of the fbCAPTURE family that is provided with a powerful Software API.


  • 1 Gbit/s Ethernet, IEEE 802.3
  • 4 x 1GE ports via 4 x SFP ports
  • Full line rate, all interfaces
  • Precision timestamping
  • 3.2 nano second resolution
  • Micro second latency
  • Inline operation for traffic modification
  • Hardware filtering and distribution
  • Application acceleration and scalability
  • 64 logical channels to DMA or egress via Tx


Network Interface(s)

IEEE standard: IEEE 802.3 1 Gbit/s Ethernet
Physical interface: 4 x SFP ports



  • Multimode SX (850 nm)
  • Singlemode LX (1310 nm)
  • Multimode ZX (1310 nm)
  • Gigabit RJ45 Copper transceiver

Data rate: 4 x 1 Gbit/s
Ethernet PHY directly embedded in FPGA

Physical bus connector: 2x 8-lane PCIe
PCIe bus type: 1-8 lane PCIe Gen1/Gen2
PCIe compliant
64 logical channels that can be connected to DMA or egressed to physical output ports

4GB (1x4GB 64 bit DDR3)

Capture rate (card internal): Full line rate
Capture rate (bursts): Full line rate
Capture rate (sustained): Full line rate
Transmission rate (inline host DMA): Full line rate
Transmission rate (inline bypass): Full line rate
Transmission rate (daisy chain): Full line rate

Less than 4 μs to host memory
Less than 4 μs from host memory to Tx
Non-blocking sending, allowing user applications to operate independently

Resolution = 3.2 ns
Accuracy down to 20 ns
Optional external synchronization via PPS
Customization for PTP IEEE 1588-2008 RJ45
Master/slave time sync between multiple cards

Dual boot images with automatic fallback to fail-safe image
Full firmware upgrades via supplied tools or fbCAPTURE API

Physical dimensions: Half length, standard height
PCIe: 111 x 169 mm
Weight: 261g
Operational power consumption: Less than 39W
Operating temperature: 0 – 55°C, 30 – 130°F
Operating humidity: 20 – 80%
Hardware compliance: RoHS, CE
Passive cooling (No on-board fan required)

On-board temperature sensor
4 Multi-color status LEDs
Link and Activity LEDs for each port
SMA connector for external PPS time synchronization pulse


Datasheet 1GE Capture Card

Silicom fbC4G