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Quad Port Copper Gigabit Ethernet PCI Express Bypass Server Adapter Intel® Based

This product has been discontinuedEOL Notification

Silicom Gigabit Ethernet Bypass servers adapter are PCI-Express X4 network interface cards that contains four independent Gigabit ports on one PCI-E adapter.

Silicom’s Gigabit Ethernet Bypass server adapters are designed with optical or copper bypass circuitry in order to provide maximum up time for the network .

Silicom’s Gigabit Ethernet Bypass server adapters can Bypass its Ethernet ports on a host system failure, power off, or upon software request. In Bypass mode , the connections of the Ethernet network ports are disconnected from the interfaces and switched over to the other port to create a crossed connection loop – back between the Ethernet ports.

Hence, in bypass mode all packets received from one port are transmitted to other port and vice versa. This feature enables to bypass a failed system and provides maximum up time for the network. Silicom’s Gigabit Ethernet Bypass server adapters include an on board WDT (Watch Dog Timer) controller.

The adapter’s software drivers or software application can write commands to the on board WDT controller. The adapter’s software drivers, WDT controller and the Bypass circuitry provide an interface that control and manage the mode of the adapter.

Silicom Gigabit Ethernet Bypass server adapters have an integrated hardware acceleration that performs TCP/UDP/IP checksum offload and TCP segmentation.

The host processing offloads accelerators frees CPU for application processing. Silicom’s PEBPI-Series are adapters are based on Intel 82571 / 82546 Dual port Gigabit Ethernet MAC+PHY of Intel Controller.


Quad Port Copper Gigabit Ethernet PCI Express Bypass Server Adapter Intel® Based


  • Bypass Ethernet ports on Power Fail, System Hangs or Software Application Hangs
  • Software programmable Bypass or Normal Mode
  • On Board Watch Dog Timer (WDT) Controller
  • Software programmable time out interval
  • Software Programmable WDT Enable / Disable counter
  • Software programmable Bypass Capability Enable / Disable
  • Programmable state (Bypass mode or Normal mode) at Power up
  • Emulates standard NIC
  • Independent Bypass operation in every two ports

Copper Gigabit Ethernet 1000Base-T :

  • Independently copper Gigabit Ethernet channels support four, two and one Gigabit Ethernet (1000Base-T), Fast Ethernet (100Base-Tx) and Ethernet (10Base-T)
  • Triple speed 1000Mbps (1000Base-T), 100 Mbps (100Base-Tx) and 10 Mbps (100Base-T) operation
  • Nway auto negotiation automatic sensing and switching between 1Gbps full duplex and 100 / 10 Mbps operations Simplex or Full Duplex
  • RJ-45 female connectors

Common Key features:

  • Host Interface standard support:
  • Host Interface PCI-Express 4X Lane (Version 1.0a)
  • High performance, reliability, and low power use in Intel 82571 / 82546 dual integrated MAC + PHY and SERDES chip controller
  • Ultra deep packet buffer per channel lowers CPU utilization
  • Hardware acceleration that can offload tasks from the host processor. The controllers can offload TCP/UDP/IP checksum calculations and TCP segmentation
  • Priority queuing – 802.1p layer 2 priority encoding
  • Virtual LANs – 802.1q VLAN tagging
  • Jumbo Frame (16KB)
  • 802.x flow control
  • Statistics for SNMP
  • LEDs indicators for link/Activity/Bypass Mode status


Quad Port Copper Gigabit Ethernet PCI Express Bypass Server Adapter Intel® Based

Bypass Specification:

WDT Interval (Software Programmable): 3,276,800 mSec (3,276.8 Sec): Maximum
100 mSec ( 0.1 Sec) : Minimum
WDT Interval = (2^wdt_interval_parameter)*(0.1) sec.
wdt_interval_parameter: {Valid Range: 0-15}

Copper Gigabit Ethernet Technical Specifications – (1000Base-T) Adapters:

IEEE Standard / Network topology: Gigabit Ethernet, 1000Base-T
Fast Ethernet, 100Base-TX
Ethernet, 10Base-T
Full duplex / Simplex: Support both Simplex & Full duplex operation in all operating speeds
Auto negotiation: Auto-negotiation between Full duplex and simplex operations and between 10Mb/s 100Mb/s speeds and duplex 1000Mb/s
Data Transfer Rate: 1000 Mbit/s, 100 Mbit/s and 10 Mbits/sec in simplex mode per port.
2000Mbit/s 200 and 20 Mbit/s in full duplex mode per port
Cables and Operating distance: 10Base-T Category 3, 4, or 5 maximum 50m *
100Base-Tx Category 5 maximum 50m *
1000Base-T Category 5E maximum 50m *
*Theoretical Distance – Defined as half a distance as stated by the IEEE 802.3 standard

Operating Systems Support

Operating system support: Windows

General Technical Specifications

Interface Standard: PCI-Express Base Specification Revision 1.0
Board Size: PCI Short add in card: 167.64mm x 111.15mm (6.6”X 4.376”)
PCI Express Card Type: X4
PCI Express Voltage: +3.3V ± 9%,
+12V ± 8%
PCI Connector: Gold Finger: X4
Controller:  Intel 82571EB
Holder: Metal Bracket: Full Height
Weight: 180 gram, (6.349 Oz)
Power Consumption: Normal mode:
9.54W, 0.3A at 12V and 1.8A at 3.3V: Typical all ports operate at 1000Mbit/s. 6.27W, 0.3A at 12V and 0.81A at 3.3V: Typical all ports operate at 100Mbit/s. 5.68W, 0.3A at 12V and 0.63A at 3.3V: Typical all ports operate at 10Mbit/s. 5.58W, 0.3A at 12V and 0.6A at 3.3V: Typical No link at all ports.
Bypass Mode:
5.98W, 0.3A at 12V and 0.72A at 3.3V: Typical
Operating Temperature: 0°C – 50°C (32°F – 122°F)
Storage: -20°C–65°C (-4°F–149°F)
EMC Certifications: FCC Part 15, Subpart B Class B
Conducted Emissions
Radiated Emissions
CE EN 55022: 1998 Class B Amendments A1: 2000; A2: 2003
Conducted Emissions
Radiated Emissions
CE EN 55024: 1998 Amendments A1: 2000; A2: 2003 Immunity for ITE Amendment A1: 2001
CE EN 61000-3-2 2000, Class A
Harmonic Current Emissions
CE EN 61000 3-3 1995, Amendment A1: 2001
Voltage Fluctuations and Flicker
CE IEC 6100-4-2: 1995
ESD Air Discharge 8kV. Contact Discharge 4kV.
CE IEC 6100-4-3:1995
Radiated Immunity (80-1000Mhz), 3V/m 80% A.M. by 1kHz
CE IEC 6100-4-4:1995
EFT/B: Immunity to electrical fast transients 1kV Power
Leads, 0.5Kv Signals Leads
CE IEC 6100-4-5:1995
Immunity to conductive surges COM Mode; 2kV,Dif. Mode 1kV
CE IEC 6100-4-6:1996
Conducted immunity (0.15-80 MHz) 3VRMS 80% A.M. By 1kHz
CE IEC 6100-4-11:1994
Voltage Dips and Short Interruptions
V reduc >95%, 30% >95% Duration 0.5per, 25per, 250per
MTBF: 80 (Years)
*According to Telcordia SR-332 Issue 1
Environmental condition – GB (Ground, Fixed, Controlled). Ambient temperature – 25°C. Temperature rise of 15°C above the system ambient temperature was assumed for the cards components


LEDs: (3) LEDs per port
Link/Activity: Turns on any link speed, blinks on activity (green).
100: Turns on 100 Mbit/s link (green).
1000: Turn on 1000 Mbit/s link (green).
Bypass: LED 1000 and LED 100 are turn on
LEDs location: LEDs are located on the PCB, visible via holes in the metal bracket holder
Connectors: (4) Shielded RJ-45


Quad Port Copper Gigabit Ethernet PCI Express Bypass Server Adapter Intel® Based




PEG4BPI-SD-RoHS Quad Port Copper Gigabit Ethernet PCI Express Bypass Server Adapter RoHS Compliant, 82571EB


Note: Model P/N -SD/-RoHS
-SD: Side Driver
-RoHS: RoHS Compliant / Lead free adapter