Copper to Fiber Media Converter With Power Supply, Port One: 10GBASE-T RJ45 100 m, Port Two: 10GBASE-X SFP+ Slot (Empty), EU

MFR PART #  S4120-1048-EU
PART #  587758
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The x4120-1048 is a 10 Gigabit Ethernet copper to fiber media converter. It offers conversion technology by providing one 10GBase-T RJ45 port and one pluggable 10GBase-X fiber SFP+ port. The open SFP+ port supports a wide variety of Transition Networks 10GE SFP+ fiber modules, as well as third party MSA compatible SFP+ modules. The x4120 provides several 10G Ethernet enterprise and data center connectivity solutions. Since most 10G Ethernet switches support a combination of copper RJ45 and open SFP + ports, the x4120 allows users to convert either of these ports to the media type of their preference to match their network requirements, including direct attached copper SFP+ cables. The stand-alone S4120 is an unmanaged device, until it is linked t o C4120 installed in a managed ION chassis, then remote in-band management of the S4120 is available


10 Gig Switch to switch, 10Gig Switch to server


  • Transparent link pass through sends a link-loss signal over the fiber, instructing the remote converter to shut down the copper port, thus notifying the end device, while maintaining the fiber link between the two converters
  • Auto-negotiation (802.3u)- Allows devices to perform automatic configuration to achieve the best possible mode of operation over a link
  • AutoCross(TM)- Automatically detects and configures the twisted pair port on the converter to the correct MDI or MDI-X configuration
  • Automatic link restoration- Transition Networks converters will automatically re-establish link in all network conditions
  • Loopback: This feature puts a converter in a special mode that enables the device to loop back the signal from the RX port to the TX port on either media for testing and troubleshooting purposes
  • DMI
  • Support remote in-band management and remote firmware upgrade when linked to a C4120 card installed in a managed ION chassis
  • Fiber port supported standards- 10GBase-SR, 10GBase-LRM, 10GBase-LR, 10GBase-ER, 10GBase-ZR
  • The open SFP+ port also supports- direct attached 10G copper. cable assemblies- both Class-I and Class-II fiber, SFP+ modules, SFP modules supporting. WDM technology
  • Support 100 m on Cat6a or higher UTP
  • Per energy efficient ethernet standards, IEEE 802.3az, UTP cable length is detected and power is adjusted according, to reduce power consumption on shorter UTP cable installs

Specification Description

Item: Copper to Fiber Media Converter With Power Supply
Data Rate: 10 Gbps
Status LEDs: PWR: On=Power is On; L/A SFP+ (Fiber Port Link And Activity Status): On=Link OK; Flashing=Link And Activity OK; Copper Link (Copper Link Status): On=Link OK;Copper Act: On=Activity OK
Dip Switches: Copper Loopback, Fiber Loopback, Transparent Link Pass Through
Power: External AC/DC Power Supply: Universal AC Input, 12 Volt DC, 1.6 Amp Output
Power Consumption: 10.5 Watt
Environmental Conditions: 0 to 50 deg C Orating Temperature; -15 to 65 deg C Storage Temperature; 5 - 95% Operating Humidity Non-Condensing; 0 - 10000 ft Altitude
MTBF With Power Supply: >41660 Hour (MIL-HDBK-217F), >114580 Hour (Bellcore)
MTBF Without Power Supply: >250000 Hour (MIL-HDBK-217F), >687000 Hour (Bellcore)
Port One: 10GBASE-T RJ45 100 m
Port Two: 10GBASE-X SFP+ Slot (Empty)
Dimension: 3.250 Inch Width x 6.500 Inch Depth x 1.000 Inch Height

Tech Info

IEEE802.3, IEEE 802.3an, IEEE 802.3ae, IEEE 802.3az, FCC Class A, EN55022 Class A, EN55024, CE Mark


Port 1 Device Technology 10000BASE-T
UNSPSC Code 43201553

Spec Sheet

Spec Sheet

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