| NO. | Brand | Compatible P/N | Transceiver Type |
| 1 | Cisco | QSFP-4SFP10G-CU1M | |
| 2 | Arista Networks | CAB-Q-S-1M | |
| 3 | Juniper | QFX-QSFP-DACBO-1M | |
| 4 | Brocade | 40G-QSFP-4SFP-C-0101 | |
| 5 | Dell | 331-8149 | |
| 6 | Intel | X4DACBL1 | |
| 7 | NVIDIA/Mellanox | MC2609130-001 | |
| 8 | IBM | BN-QS-SP-CBL-1M |
| Intel Compatible |
X4DACBL1
|
Vendor Name | HYTOPTODEVICE |
| Connector | QSFP+ to 4 x SFP+ | Max Data Rate | 40Gbps |
| Cable Length | 1m (3ft) | Wire AWG | AWG 30 |
| Cable Type | Passive Twinax | Power Consumption | ≤0.5W |
| Media | Copper | Operation Temperature | 0~ 70 °C (32 to 158°F) |
| Jacket Material | PVC(OFNR) | Protocols | SFF-8436, SFF-8431 and QSFP+ MSA |
| Minimum Bend Radius | 21mm | Application | 40G InfiniBand 8x DDR, 4x QDR, 10/40 Gigabit Ethernet, Fibre Channel |
Usage Guidelines & Best Practices
Mandatory Port Breakout Configuration: Ensure the host QSFP+ port supports channelization. Enable breakout mode (4x10G) via the switch CLI before connecting the cable.
Cabling Requirements: Do not exceed the minimum 21mm bend radius, avoid sharp folding, heavy extrusion or long-term tension on the cable assembly.
Port Installation Standard: Do not mix this breakout DAC with straight QSFP+ to QSFP+ DAC configuration.
Hot‑swap rule:Never pull or tug directly on the individual breakout legs. Always use the integrated pull-tab or bale latch when inserting or removing connectors.
Operating Environment: 0‑70℃, indoor cabinet deployment only.
For detailed operation instructions, please refer to the User Guide.
Full Compatibility List & Supported Devices
Built on universal MSA open standards, this 40G QSFP+ DAC breakout cable can interoperate with mainstream network brands including Arista, Intel, Juniper, Dell, NVIDIA Mellanox and IBM, for mixed-vendor rack stacking and server fabric expansion.
Q1: Which Intel NIC firmware and driver versions support this passive direct attach copper breakout cable? A: It works stably with XL710 / X710 latest ixgbe and i40e driver releases. HYTOPTODEVICE validates each batch on Intel server adapters to cut deployment risk for Intel server partners placing stock orders.
Q2: Can this passive direct attach copper breakout cable work on Intel X520, X540 older generation SFP+ only NICs? A: X520/X540 lack native QSFP+ physical ports and breakout support. Confirm NIC port form factor before purchase; this cable is built for Intel QSFP+ quad-port adapters.
Q3: Will Linux ixgbe driver automatically recognize this pre-programmed passive direct attach copper breakout cable after server boot? A: Yes, valid EEPROM signature allows automatic identification by Linux ixgbe driver. This simplifies mass server provisioning for system integrators building HPC and virtualization clusters.
Q4: Can I order this passive direct attach copper breakout cable with custom EEPROM for mixed Intel NIC and SONiC white-box fabric setups? A: Yes, HYTOPTODEVICE provides cross-platform custom EEPROM programming for bulk orders. It helps integrators standardize cabling specs across hybrid server and open networking environments.
Q5: Will Linux or Windows server OS log repeated transceiver warnings if this passive direct attach copper breakout cable is mixed with Intel original SFP+ optics? A: No, DAC and optical modules run independently per logical port. Once breakout mapping is correctly configured, mixed media will not trigger persistent system alerts.
Q6: Is this passive direct attach copper breakout cable suitable for RoCE and iWARP low latency HPC interconnect? A: Yes, passive twinax brings near-zero added latency for RDMA traffic. Many Intel server resellers buy this breakout cable to expand affordable 10G RDMA access density for compute nodes.
Q7: Will breakout sub-interface mapping stay intact after Intel NIC driver upgrade on ESXi hosts? A: Breakout interface settings save to hypervisor network config. Major driver upgrades still require spot-checking port profiles for stocked passive direct attach copper breakout cable units.
Q8: What is the typical shipping lead time for bulk orders of this passive direct attach copper breakout cable for overseas Intel server distributors? A: In-stock orders usually ship within 3–5 working days. HYTOPTODEVICE keeps ready inventory and supports expedited delivery for urgent HPC and virtualization project procurement.
Q9: Can this passive direct attach copper breakout cable carry lossless PFC traffic for server-attached iSCSI storage arrays? A: Yes, passive copper does not interfere with priority flow control frames. It reliably transports lossless storage traffic, a good fit for buyers building Intel server storage fabrics.
Q10: What is the first troubleshooting step when one SFP+ breakout lane stays down on an XL710 adapter? A: First verify hypervisor/driver breakout profile and re-seat the SFP+ connector. Inactive lanes mostly come from missing breakout config or loose contact on newly purchased cables.
Q11: What warehouse humidity range should wholesalers follow when warehousing this passive direct attach copper breakout cable? A: Store inventory under 10–60% RH dry indoor conditions. High-purity copper from HYTOPTODEVICE resists oxidation and maintains stable electrical performance for multi-year resale stock.
Q12: Do I need extra paid NIC firmware license to activate 40G to 4×10G breakout on Intel XL710-QDA2? A: Breakout is a base hardware feature for XL710 QSFP+ ports and does not require premium licensing. Buyers should review the official Intel NIC datasheet before ordering.
Q13: Can the four SFP+ tails of this passive direct attach copper breakout cable connect directly to top-of-rack 10G SFP+ switch ports? A: Yes, the SFP+ branches interoperate smoothly with standard 10G switch ports. It is a cost-effective cabling choice connecting Intel QSFP+ NICs to leaf switches.
Q14: What compliance and test documents can HYTOPTODEVICE supply for enterprise tender projects requiring this passive direct attach copper breakout cable? A: We can provide batch TDR test reports, RoHS and REACH certificates. These documents help wholesalers pass audit checks during Intel HPC and server virtualization bidding.
Q15: Can the EEPROM signature of this passive direct attach copper breakout cable be rewritten after migrating away from Intel XL710/X710 NICs? A: Yes, HYTOPTODEVICE offers EEPROM reprogramming service. It allows resellers to reuse stocked breakout cables on other brand switches and improve inventory turnover.
Packaging & Custom OEM Solutions
ESD Protection & Fast Shipping: Every transceiver is sealed in an ESD-safe bag and ready for same-day dispatch from stock.
Custom OEM & Branding: We provide logo printing, private labeling, and custom packaging to help distributors and integrators build their brand—no factory investment required.
Why Network Engineers Choose HYTOPTODEVICE
HYTOPTODEVICE has supplied over 5000,000 optical transceiver modules to data centers, ISPs, and enterprise networks across 100+ countries since 2011. Every module undergoes a 72-hour burn-in test and full DDM/DOM validation before shipment.
“Phenomenal performance. We deployed 200 HYTOPTODEVICE SFP modules to replace Cisco OEMs in our backbone network. Result? Zero compatibility issues and a 60% reduction in costs. Highly recommended for mission-critical networks."— Senior Network Engineer, Regional Telecom, Australia
Quality Certification & Compliance
At HYTOPTODEVICE, our quality commitment is backed by industry-standard validations. From fiber optical transceiver manufacturing to final visual inspection, from IQC、IPQC、FQC to OQC, our processes ensure global compliance and reliability.
We adhere to rigorous standards for our SFP modules and network solutions:
ISO 9001: Certified quality management and production consistency.
CE & FCC: Fully compliant for seamless Global Market Access.
RoHS: Committed to environmental responsibility and hazardous material control.
Proven Reliability: Rigorous testing to reduce compliance risk and ensure safety.
Certified Quality. Global Standards. Guaranteed Performance.
