StarTech.com LOOPBACKPLUG100G QSFP28 Loopback Module 100G Passive Electrical Port Tester for QSFP28 and QSFP+ Ports
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StarTech.com
StarTech.com LOOPBACKPLUG100G QSFP28 Loopback Module 100G Passive Electrical Port Tester for QSFP28 and QSFP+ Ports
€106.09 inc. VAT
LOOPBACKPLUG100G
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Buying Benefits
Verified
Competitive EU pricing
Delivered to Cyprus from EU stock
Local warranty support
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StarTech.com LOOPBACKPLUG100G — QSFP28 100G Loopback Plug
QSFP28100G / 40GPassive electricalPort tester
The StarTech.com LOOPBACKPLUG100G is a passive QSFP28 loopback module: plugged into a 100G or 40G port, it routes the port’s own transmit signal straight back to its receive side. Network engineers use it to prove that a switch port, network card or its configuration works before blaming the optic, the fibre or the far end. In practice, a loopback plug is the quickest way to tell whether a problem sits in the switch port or further down the link: if the port comes up with the plug inserted, the port and its configuration are fine, and the fault is in the optic, the cable or the far end.
Compatibility — check before buying:
This is a test tool, not a transceiver: it carries no user traffic and cannot test fibre or optics, because it is an electrical loopback, not an optical one. It fits QSFP28 and QSFP+ ports; it does not fit SFP, SFP+ or SFP28 ports. StarTech.com does not publish power dissipation or attenuation figures. Not sure? Send us your device model and the cable run and we check it before you order.
Best For
✓ Testing 100G switch ports
✓ Burn-in of new switches and NICs
✓ Checking QSFP+ 40G ports
✓ Isolating link faults
✓ Lab and staging benches
✓ Data-centre field kits
Key Features
Port test in seconds
Insert it, and the port comes up on its own signal — a quick check of the port and its settings.
Works on 40G and 100G
StarTech.com lists 40G and 100G Ethernet support, so one plug covers QSFP+ and QSFP28 ports.
No fibre, no cleaning
A passive electrical loopback needs no patch cords, no power budget and no connector cleaning.
Electrical, not optical
A passive electrical loopback: it connects each transmit lane straight back to its receive lane inside the plug, so it needs no fibre, no power budget and no cleaning.
Technical Specifications
Frequently Asked Questions
Singular Expert Insight
A loopback plug belongs in every data-centre toolkit: it takes the guesswork out of a link that will not come up. Keep it with the spare optics, and remember it only tests the port side — for fibre faults you still need a light meter or a spare pair of optics. Every order is backed by Singular’s local support in Cyprus — if a link will not come up, send us the port status and we help you find out whether it is the module, the cable or the configuration. Browse all transceivers and DAC cables or the switches they plug into.
Buyer’s Guide
Buy it if
You install or troubleshoot 100G or 40G QSFP ports and want a quick port test.
Skip it if
You need to test fibre or optics, or your ports are SFP/SFP+/SFP28.
Also consider
Spare QSFP28 optics or DAC cables for end-to-end tests.
Port Spped
- 40 Gbps,
- 100 Gbps
Χαρακτηριστικά
Product Code
CR72269
EAN Code
0065030923491
Manufacturer
StarTech.com