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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2 x 100GBASE-LR4 QSFP-DD Transceiver, with 2x CS optical connectors, up to 10km over two pairs of duplex SMF
Transceiver 1 Gb Copper SFP for WatchGuard Firebox M400 and M500, compatible
LevelOne PFE-1014R PoE over Hybrid Cable Receiver, 4 PoE Outputs, Indoor/Outdoor, compatible
Avaya - SFP (mini-GBIC) transceiver module - GigE - 1000Base-CWDM - LC - up to 70 km - 1530 nm - for Ethernet Routing Switch 25XX, 45XX, 55XX, Avaya Ethernet Routing Switch 2526, 4526
HPE InfiniBand NDR/Ethernet 400Gb OSFP 1-port Single-mode 100m HCA-side Flat-Top Transceiver
LANCOM UF-SFP-SX-LC1-LC10, 1G to 10GBASE-SR/SW SFP transceiver module for LANCOM RS firewall SFP+ ports, supports 50/125 µm multimode fiber up to 300 m
1-port 1000BaseCWDM Small Form Factor Pluggable GBIC (mini-GBIC, connector type: LC) -1490nm Wavelength, 40km
CIENA - SFP+ transceiver module - 10GbE - 10GBase-DWDM - LC single-mode - up to 40 km - channel: 35 - 1549.32 nm
1-port 1000BASE-ZX Small Form-Factor Pluggable (SFP) Optics Module, Single Mode Fiber (SMF), 70km, 1550 nm, LC Connector, Digital Diagnostic Monitor (DDM), Extended Temperature -40/85C., compatible
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.