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- Description
- Specifications
845416-B21 is the HPE 100Gb QSFP28 to 4x25Gb SFP28 3m Direct Attach Copper Cable, a breakout cable that splits one 100GbE port into four 25GbE SFP28 connections. It is 3.0 m (9.84 ft) long and is a 100 Ohm cable with the transceivers permanently attached at each end.
The Aruba CX 8325 switch series supports breakout cabling that splits a single 100G port into 4x25G, and 845416-B21 is one of its 100G QSFP28 cable options. The HPE Virtual Connect SE 100Gb F32 Module for Synergy also has it among its QSFP28 cables for uplink ports.
Next to it for the Synergy module are 845406-B21 (3m QSFP28 to QSFP28 copper), 845408-B21 (5m copper), 845410-B21 (7m active optical), 845414-B21 (15m active optical), the 4x25Gb active optical breakouts 845420-B21 (7m) and 845424-B21 (15m), and the QSFP28 to SFP28 adapter 845970-B21.
On HPE Primera 600 storage, direct attach copper support begins with OS release 4.2. 25GbE DAC speeds are not supported on the Primera 10GbE onboard ports, and a Primera DAC cannot be connected straight to a host; it must go to a switch.
The spare is 850397-001, a 100GbE SFP28 to 4x25GbE SFP28 3.0m (9.84ft) direct attach copper cable.
| Option number | 845416-B21 |
| Product | HPE 100Gb QSFP28 to 4x25Gb SFP28 3m Direct Attach Copper Cable |
| Cable type | direct attach copper (DAC), breakout |
| Speed | 100GbE to 4 x 25GbE |
| Length | 3.0 m (9.84 ft) |
| Impedance | 100 Ohm |
| Connectors | QSFP28 to 4 x SFP28, permanently attached |
| Switch series | Aruba CX 8325 |
| Synergy module | Virtual Connect SE 100Gb F32 |
| Storage | HPE Primera 600, OS 4.2 or later |
| Spare number | 850397-001 |