Network transceiver module InLine 32336E by InLine — model 32336E

The InLine 32336E QSFP28-100G-SR4 network transceiver module delivers 100 Gigabit Ethernet connectivity for multimode fibre links. Designed as a hot-pluggable QSFP28 plug-in, the module supports parallel 4‑channel 25.78 Gb/s transmission using a VCSEL array at 850 nm and an MPO-12 optical interface. It is intended for media conversion, link extension, replacements or spare-part use in data centre and enterprise network equipment compatible with QSFP28 MSA and IEEE 802.3bm.

Advantages

The module provides high aggregate bandwidth (100 Gb/s) with low power consumption (< 2.5 W) and compact QSFP28 form factor, enabling dense port deployment in switches and routers. Integrated Digital Diagnostic Monitoring (DDM) via I²C supplies real-time information on temperature, voltage and TX/RX power for proactive monitoring. Compliance with common mechanical and electrical standards (QSFP28 MSA, IEEE 802.3bm, SFF-8636) ensures broad interoperability with commercially available 100G equipment. Hot-pluggability allows insertion or replacement without powering down the host device.

Suitable for

• Data centre rack and spine-leaf high-speed interconnects
• Enterprise core and aggregation switches and routers
• Short-reach multimode fibre links within and between racks (OM3/OM4)
• Network equipment spare part or on-site replacement

Key specifications

• Form factor: QSFP28
• Standard: 100GBASE-SR4
• Aggregate transmission rate: 4 × 25.78 Gb/s (100 Gb/s)
• Fibre type: Multimode (OM3, OM4)
• Optical range: up to 70 m on OM3, up to 100 m on OM4
• Transmitter: 4 × 850 nm VCSEL array
• Receiver: PIN photodiode array
• Optical connector: MPO-12
• Electrical interface: CAUI-4
• Digital Diagnostic Monitoring (DDM): I²C access to temperature, voltage, TX/RX power and bias current
• Supply voltage: 3.3 V
• Power consumption: < 2.5 W
• Operating temperature range: 0 °C to +70 °C
• Laser safety: Class 1

How to use

Handle the QSFP28 transceiver by its edges and avoid contact with the optical interfaces. Insert the module into a compatible QSFP28 slot on the host device until it clicks into place; the module supports hot-plug operation so it can be inserted or removed while the system is powered. Connect an MPO-12 multimode fibre patch cable matched to OM3 or OM4 specifications and verify link status via the host device. Use the host or management software to read DDM values over I²C for real-time diagnostic information and to confirm correct operation.

Usage recommendations

For optimal performance, use high-quality OM4 multimode fibre for distances up to 100 m and ensure patch cables and MPO connectors are clean and properly aligned. Monitor DDM parameters to detect abnormal temperature or power levels early. If interoperability issues arise due to vendor coding, request customer-specific programming from your supplier to match host requirements.