Transceivers: Modular connection solutions for your network
Transceivers are key components of modern network technology - they enable flexible data transmission via copper or fiber optics and can be integrated directly into switches, routers, or firewalls. With the right transceiver modules, you can expand your infrastructure with Gigabit or high-speed connections - exactly as needed.
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NVIDIA MMS4X00-NL twin port transceiver, 800Gb/s, 2xNDR InfiniBand, OSFP, 2xMPO12 APC, 1310nm single mode fiber, up to 30 m, finned top, compatible
HPE Aruba Networking 10G I-Temp BiDi LC 10km-Upstream SMF 1270/1330 Transceiver - compatible
SFP+, 10G-SR, OM3 300m, OM4 400m, Extended Temperature (0 through 85C), Duplex LC/PC receptacle
1-port 1000BaseCWDM Small Form Factor Pluggable GBIC (mini-GBIC, connector type: LC) - 1490nm Wavelength, 70km.
1-port 1000BaseCWDM Small Form Factor Pluggable GBIC (mini-GBIC, connector type: LC)-1610nm Wavelength, 40km. Diagnostic Monitoring Interface., compatible
10GBASE-LR,SFP Optic (LC), for up to 10 KM over SMF, Standard Temperature.
Allied Telesis Converteon CM3K0S - Gigabit Ethernet Media and Rate Converter Line Card - 1x 10/100/1000 RJ45, 1x 100/1000 SFP Slot, Includes AT-SPSX 1000BASE-SX LC Multimode Transceiver, Up to 550 m - compatible
Mellanox/ Nvidia - InfiniBand Transceiver NDR (Twin-port OSFP NDR 800G flat top, 2x MPO12 850nm NDR 400G Adapter)
What is a transceiver and how does it work?
A transceiver (transmitter + receiver) sends and receives data via network cables - in the form of light (fiber optic) or electrical signals (copper). It is plugged into standardized ports such as SFP, SFP+, or QSFP and is often hot-swappable, meaning it can be replaced during operation.
Typical applications:
- Connecting network components over long distances
- Upgrading existing networks to higher bandwidths
- Integration into modular switches, firewalls, or storage systems
Overview of common transceiver formats
SFP & SFP+:
- SFP module: The standard for 1 Gbit/s connections
- SFP+ module: Supports up to 10 Gbit/s – ideal for servers or core switches
- SFP S / SFP SFP+: Combinations or product names in manufacturer documentation, often used synonymously
Other formats:
- QSFP/QSFP28: For 40G, 100G, or 400G applications
- SFP28: 25G transceiver for modern data centers
Fiber optic transceivers vs. copper
Fiber optic transceivers enable interference-free transmission over long distances - ideal in data centers, between buildings, or in EMC-critical environments. In comparison, copper transceivers are suitable for short distances (up to 100 m) and standardized cabling.
Advantages of fiber optics:
- High bandwidths (10G, 25G, 100G+)
- Low latency
- Insensitive to electromagnetic interference
When selecting a fiber optic transceiver module, wavelength, distance, and fiber type (single-mode vs. multi-mode) should be taken into account.
Manufacturer compatibility: Cisco, Juniper, Aruba, Dell, Lenovo, and many more
Transceivers are often manufacturer-specific. it-market offers a wide selection of compatible modules for the following systems:
- Cisco transceivers: e.g., for Catalyst, Nexus, or Meraki series
- Juniper transceivers: for EX, QFX, and MX platforms
- Aruba transceivers: for Aruba switches or Instant-On solutions
- Dell & Lenovo transceivers: specially validated modules for PowerSwitch and ThinkSystem environments
- And many other manufacturers
Transceivers: new, used, and refurbished at it-market
At it-market, you will find tested network transceivers for all common manufacturers and requirements. Whether you need an SFP module, a 10G SFP+, a QSFP, or a fiber optic transceiver, we offer new, used, and refurbished transceivers with tested quality.
Benefit from:
- 3-year warranty for companies
- Up to €2,500 buyer protection
- Short delivery times
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