QSFP-100G-CU3M: Cisco 100GBASE-CR4 QSFP28 Direct Attach Copper Cable 3m
Also listed as: 37-1111-01, QSFP-100G-CU3M=
The Cisco QSFP-100G-CU3M is a 3-meter passive direct attach copper cable assembly providing 100 Gigabit Ethernet inter-switch and host connections within racks.
Specifications
| Part number | QSFP-100G-CU3M |
|---|---|
| Brand | Cisco |
| Type | Cables |
| Other numbers | 37-1111-01, QSFP-100G-CU3M= |
| Status | current |
| Form factor | QSFP28 |
| Speed | 100GbE |
| Connector | QSFP28 to QSFP28 |
| Cable type | Twinaxial passive copper |
| Max distance m | 3 |
About the QSFP-100G-CU3M
The Cisco QSFP-100G-CU3M direct attach copper assembly provides high density 100 Gigabit Ethernet connectivity inside equipment racks and between adjacent enclosures. It contains eight high speed twinaxial copper pairs delivering four full duplex channels at 25Gbps per lane. It offers ultra low latency and reliable signal integrity for short reach inter-switch links and high performance server connections.
Compatibility
Compatible with Cisco Nexus 9000, 3000, and Catalyst 9500/9600 Series switches with QSFP28 interfaces. It connects spine switches to leaf switches and bridges 100GbE network adapters in storage arrays and compute nodes without optical transceiver overhead.
How to identify a genuine unit
Features a heavy duty shielded black twinaxial cable harness terminating in metal QSFP28 connector shells. Both connector ends include a durable pull tab release mechanism and an adhesive label showing assembly number 37-1111-01, part designation QSFP-100G-CU3M, and serial barcode.
Buying used
Inspect the copper cable jacket for pinch points, tight bends, or damage to outer braiding. Check the connector contact fingers for physical wear, plug into target 100GbE ports, and confirm immediate link synchronization with zero link flap events recorded in system logs.
Fits these models
- Cisco Nexus 3048
- Cisco Nexus 31108PC-V
- Cisco Nexus 3232C
- Cisco Nexus 34180YC
- Cisco Nexus 5548P
- Cisco Nexus 5696Q
- Cisco Nexus 6004X
- Cisco Nexus 7004
- Cisco Nexus 7009
- Cisco Nexus 7010
- Cisco Nexus 7018
- Cisco Nexus 7706
- Cisco Nexus 7710
- Cisco Nexus 7718
- Cisco Nexus 93108TC-FX
- Cisco Nexus 93108TC-FX3P
- Cisco Nexus 93180YC-FX
- Cisco Nexus 93180YC-FX3
- Cisco Nexus 93240YC-FX2
- Cisco Nexus 9332D-GX2B
- Cisco Nexus 9336C-FX2
- Cisco Nexus 9348GC-FXP
- Cisco Nexus 9364C-GX
- Cisco Nexus 9364C
- Cisco Nexus 9364D-GX2A
- Cisco Nexus 9372TX
- Cisco Nexus 9396TX
- Cisco Nexus 9504
- Cisco Nexus 9508
- Cisco Nexus 9516
Check compatibility with Cisco
Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that Cisco has tested with the Cisco QSFP-100G-CU3M.
- Compatibility Cisco UCS Hardware Compatibility List
- Compatibility Cisco Optics-to-Device Compatibility Matrix
- Support Cisco Support and Downloads
FAQ
What is the physical length of the QSFP-100G-CU3M cable?
It is exactly 3 meters in total length.
Does this cable require electrical power?
No, it is a fully passive twinaxial copper assembly drawing zero operating power.
Buying or selling QSFP-100G-CU3M?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- Cisco 100GBASE QSFP-100G Modules Data Sheet, checked 2026-10-27