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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Allied Telesis AT SP10BD10/I - SFP+ transceiver module - 10 GigE - 10GBase-LR - LC - up to 10 km - 1270-1330 nm - TAA Compliant, compatible
LevelOne SFP-4210 1.25Gbps Single-mode Industrial SFP Transceiver, 10km, 1310nm, -40 degree C to 85 degree C, compatible
LANCOM SFP-SR-MPO100, 100GBASE-SR4 QSFP module for QSFP28 ports on LANCOM switches, supports 50/125 m OM3 and OM4 multimode fiber incl. MPO connector, max. distance 100 m
100G 4WDM-40 QSFP28 40km LC connector Single-Mode MSA P/N EQPT1H4WM4ECL100., compatible
SFP+, 10G-LR, SMF 10km, Extended Temperature (0 through 85 C), Duplex LC/PC receptacle, compatible
Juniper Networks - SFP+ transceiver module - 10 GigE - 10GBase-USR - up to 100 m - 850 nm - for EX Series EX9204, EX9208, QFX Series QFX10016, QFX5120
SFP28 25G Active Optical Cables, direct-attach fiber assemblies with SFP connectors 15-meter
2x 400GBASE-LR4-10 QSFP-DD Transceiver dual CS Connectors, up to 10km over dual duplex SMF
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
Do you have any questions? Our sales team is happy to answer your questions about IT hardware and IT remarketing.