QSFP-100G-SR4-S: Cisco 100GBASE-SR4 QSFP28 Optical Transceiver
Also listed as: 10-3141-01, QSFP-100G-SR4-S=
The Cisco QSFP-100G-SR4-S is a 100 Gigabit Ethernet QSFP28 optical transceiver providing 100Gbps connectivity over 12-fibre MPO multimode cabling.
Specifications
| Part number | QSFP-100G-SR4-S |
|---|---|
| Brand | Cisco |
| Type | Transceivers |
| Other numbers | 10-3141-01, QSFP-100G-SR4-S= |
| Status | current |
| Form factor | QSFP28 |
| Speed | 100GbE |
| Wavelength nm | 850 |
| Connector | MPO-12 |
| Cable type | Multimode Fibre |
| Max distance m | 100 |
About the QSFP-100G-SR4-S
The Cisco QSFP-100G-SR4-S is an S-Class 100GBASE-SR4 optical module engineered for high-density 100 Gigabit Ethernet switch interconnects and spine-leaf architectures. It transmits over 850nm multimode optical ribbons up to 100 meters on OM4 and 70 meters on OM3 cabling using MPO-12 connectors. It provides high aggregation throughput for modern cloud data center fabrics.
Compatibility
Compatible with QSFP28 uplink ports on Cisco Nexus 9300 series switches, including Nexus 93180YC-FX and 93180YC-FX3. It supports standard 100GbE aggregation links and can also be configured in 4x25GbE breakout mode using appropriate MPO-to-LC optical breakout assemblies.
How to identify a genuine unit
Identified by an enclosed QSFP28 casing with a beige pull-tab release handle and printed Cisco product markings. The label specifies part code QSFP-100G-SR4-S, laser hazard class ratings, and serial number. Telemetry queries in Cisco NX-OS show 4 individual 25Gbps lanes with per-lane optical power readings.
Buying used
Before installing a pre-owned 100G transceiver, inspect the MPO guide pins and optical ribbon interface for dirt or physical misalignment. Confirm that the module latches cleanly into the switch cage and that NX-OS successfully trains all 4 lanes to achieve full 100Gbps line-rate transmission.
Fits these models
Works together
How the Cisco QSFP-100G-SR4-S connects to servers, storage and the network: 3 ways, with the hardware on each path.
iSCSI and NVMe/TCP over Ethernet
Keep the speed the same at all three points: a 25GbE server, a 25GbE switch port and a 25GbE array port. Mixed speeds work but the slowest link sets the pace.
Adapters for the server
BCM957504A5041CC Broadcom NetXtreme-E BCM57504 Quad-Port 100GbE QSFP56 PCIe 4.0 Ethernet Network Adapter
540-BDBX Dell NVIDIA Mellanox ConnectX-6 Dx Dual Port 100GbE QSFP56 PCIe Adapter
540-BDCF Dell Intel E810-CQDA2 Dual Port 100GbE QSFP28 PCIe Gen4 Adapter
540-BDCP Dell Broadcom 57508 Dual Port 100GbE QSFP56 PCIe Gen4 Adapter
Switches
cisco Nexus 3000 Nexus 31108PC-V 1U fixed switch
cisco Nexus 3000 Nexus 34180YC 1U fixed switch
cisco Nexus 9000 Nexus 93240YC-FX2 1.2U fixed switch
cisco Nexus 9000 Nexus 9336C-FX2 1U fixed switch
Storage
Dell PowerStore 1200T 2U rack
Dell PowerStore 3200T 2U rack
Dell PowerStore 5200T 2U rack
Dell PowerStore 9200T 2U rack
HPE Alletra Storage MP 2U rack
Lenovo ThinkSystem DE6400H 2U rack
File storage (NFS and SMB)
Front-end ports face the clients; back-end ports (on scale-out systems) connect the nodes to each other and need their own switch pair.
Adapters for the server
- BCM957504A5041CC Broadcom NetXtreme-E BCM57504 Quad-Port 100GbE QSFP56 PCIe 4.0 Ethernet Network Adapter
- 540-BDBX Dell NVIDIA Mellanox ConnectX-6 Dx Dual Port 100GbE QSFP56 PCIe Adapter
- 540-BDCF Dell Intel E810-CQDA2 Dual Port 100GbE QSFP28 PCIe Gen4 Adapter
- 540-BDCP Dell Broadcom 57508 Dual Port 100GbE QSFP56 PCIe Gen4 Adapter
Switches
- cisco Nexus 3000 Nexus 31108PC-V 1U fixed switch
- cisco Nexus 3000 Nexus 34180YC 1U fixed switch
- cisco Nexus 9000 Nexus 93240YC-FX2 1.2U fixed switch
- cisco Nexus 9000 Nexus 9336C-FX2 1U fixed switch
Storage
Dell PowerScale F600 1U rack
Dell PowerScale F900 2U rack
Dell PowerScale H700 4U- Dell PowerStore 1200T 2U rack
- Dell PowerStore 3200T 2U rack
- Dell PowerStore 5200T 2U rack
Hyperconverged cluster
Plan at least two 25GbE ports per node to two switches; all-NVMe clusters often move to 100GbE.
HCI nodes
HPE SimpliVity 325 Gen10 Plus v2 1U rack
HPE SimpliVity 380 Gen10 G 2U rack
HPE SimpliVity 325 Gen10 1U rack
HPE SimpliVity 380 Gen10 2U rack
Adapters for the server
- BCM957504A5041CC Broadcom NetXtreme-E BCM57504 Quad-Port 100GbE QSFP56 PCIe 4.0 Ethernet Network Adapter
- 540-BDBX Dell NVIDIA Mellanox ConnectX-6 Dx Dual Port 100GbE QSFP56 PCIe Adapter
- 540-BDCF Dell Intel E810-CQDA2 Dual Port 100GbE QSFP28 PCIe Gen4 Adapter
- 540-BDCP Dell Broadcom 57508 Dual Port 100GbE QSFP56 PCIe Gen4 Adapter
Switches
- cisco Nexus 3000 Nexus 31108PC-V 1U fixed switch
- cisco Nexus 3000 Nexus 34180YC 1U fixed switch
- cisco Nexus 9000 Nexus 93240YC-FX2 1.2U fixed switch
- cisco Nexus 9000 Nexus 9336C-FX2 1U fixed switch
Plan and size it
- Draw this setup in the topology planner mrplanb.com
- Add up rack power and space rack-density.com
- iSCSI explained mrplanb.com
- Virtualization storage Ledger: scored storage platforms mrplanb.com
- Network monitoring tools compared mrplanb.com
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-SR4-S.
- Compatibility Cisco UCS Hardware Compatibility List
- Compatibility Cisco Optics-to-Device Compatibility Matrix
- Support Cisco Support and Downloads
FAQ
What connector type does QSFP-100G-SR4-S require?
It requires an MPO-12 optical connector over OM3 or OM4 multimode fibre.
Can this transceiver be split into 4x 25GbE links?
Yes, with an MPO-to-4xLC breakout cable, it supports 4 independent 25GbE links.
Buying or selling QSFP-100G-SR4-S?
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