100G QSFP28 Breakout DAC-100GBase QSFP28 to 4 x 25G SFP28 Passive Direct Attach Copper Breakout Cable for Cisco QSFP-4SFP25G-CU50CM,0.5m (2ft)
94.49 CAD
In-rack fan-out connecting a 100G QSFP28 switch port to four 25G SFP28 servers or NICs over a short 0.5m run.
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About this product
Key features
- 【100G HIGH SPEED】100GBase-CU QSFP28 to 4x 25G SFP28 Breakout Direct Attach Copper Twinax Cable, Passive, 0.5-Meter, 30AWG.
- 【100% Compatible】Compatible with Cisco QSFP-4SFP25G-CU50CM.
- 【HIGH PERFORMANCE】QSFP-100G to 4x SFP-25G copper direct-attach breakout cables are suitable for very short links and offer a cost-effective way to connect within racks and across adjacent racks. These breakout cables connect to a 100G QSFP port of a Arista switch on one end and to four 25G SFP ports of a Cisco switch/server on the other end.
- 【100% Tested】Tested in Host Devices for Proven Interoperability,Every 100G QSFP28 DAC is quality tested for compatibility in the targeted switch environment, which guarantees flawless operations.
- 【Flexible Deployment】The 100G Breakout DAC cable offers versatile and adaptable deployment options, supporting a capacity of 100G. It can be smoothly connected to a wide range of switch,server,network adapter, data center devices within your network.
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Specifications
- Type
- 100G QSFP28 to 4x 25G SFP28 passive DAC breakout cable
- Standard
- 100GBASE-CR4 breakout to 4x 25GBASE-CR
- Connectors
- 1x QSFP28 to 4x SFP28
- Cable Length
- 0.5m (about 2 ft)
- Construction
- Passive direct attach copper (twinax)
- Cisco Compatible Part
- QSFP-4SFP25G-CU50CM
Pros
- ✓Splits one 100G QSFP28 port into four independent 25G SFP28 links
- ✓Passive copper design needs no power and adds negligible latency
- ✓Short 0.5m length ideal for in-rack top-of-rack to server connections
- ✓Lower cost than four separate optics plus fiber
Cons
- ×Fixed length cannot be extended or re-terminated
- ×Passive DAC limited to short reach (in-rack only)
- ×Switch port must be configured for 4x25G breakout mode
- ×Cisco-coded; may need compatibility settings on non-Cisco gear
FAQ
What does the breakout do?
It connects one 100G QSFP28 switch port to four devices at 25G each via the four SFP28 ends, commonly used for top-of-rack to server fan-out.
Is it compatible with my Cisco switch?
It is built to the Cisco QSFP-4SFP25G-CU50CM spec, so it works in Cisco switches that support 100G-to-4x25G breakout. The port must be set to breakout mode.
Does it need power?
No. It is a passive direct attach copper cable with no active electronics.