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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LevelOne SFP-6531 10Gbps Single-mode BIDI SFP+ Transceiver, 20km, TX 1330nm / RX 1270nm, compatible
POS OC-12 (STM-4) LR-2 pluggable SFP optic (LC connector). Range up to 80 km over SMF.
40GBASE-LR4, Four Channel optical transceiver. Typical reach of 2 km on SMF 1264.5-1277.5, 1284.5-1297.5, 1304.5-1317.5 and 1324.5-1337.5 nm, LC connector.
Cisco - CFP2 transceiver module - 100 Gigabit Ethernet, 200 Gigabit LAN - WDM - for Network Convergence System 4009, 4016, 6008
100Base-BXD SFP optic SMF, transmits at 1550nm and receives at 1310nm, LC connector. This optic should only be connected to an E1MG-100BXU at the far end., compatible
X140 40G Quad Small Form-factor Pluggable (QSFP+) ,Multi fiber Push-On (MPO) SR4 transceiver
LANCOM SFP-DD-DAC50-1m 50 Gbps stacking cable for the use in each of the four dedicated SFP-DD backplane stacking ports (Total stacking capacity 200G), length 1m
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.