Dell 331-8149 Compatible 40G QSFP+ Passive Direct Attach Copper Breakout Cable 1m(3ft) Bulk Wholesale | HYTOPTODEVICE

For detailed technical specifications, please refer to the Datasheet

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.

• Testing & Storage: Run sample validation on target hardware before large bulk deployment; store spare cables in dry, dust‑free and anti‑static packaging.

For detailed operation instructions, please refer to the User Guide.

Full Compatibility List & Supported Devices

1. Validated Dell Hardware & Firmware

• Dell PowerSwitch S4128T-ON, S4148U-ON, S5248F-ON leaf switches
• Dell Z9100-ON, Z9264-ON high-density spine switches
• Dell VxRail, PowerEdge MX fabric interconnect modules

2. Multi-Brand Cross Interoperability

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.

3. Free Value-Added Services

• Dell OS10 leaf-spine fabric 40G port breakout into four 10G server uplinks
• Short intra-rack cabling for Dell VxRail hyper-converged cluster interconnect
• Direct replacement for original Dell 331-8149 passive direct attach copper breakout cable
• EMC PowerScale / Isilon storage backend fan-out wiring
• 10G iSCSI storage fabric links connected to Dell PowerSwitch
• Stock replenishment purchase for IT distributors and Dell EMC solution partners

The Core Feature

1. Near-Zero Power Draw, Cooler Dense Racks

This passive 40G QSFP+ DAC breakout cable draws only around 0.5 W — a tiny fraction of active copper and AOC alternatives — minimizing heat output and fan load in dense racks, while splitting one 40G QSFP+ port into four independent 10G SFP+ links with minimal latency for short-reach connections within a rack or between adjacent racks.

2.Switch-Validated Before Shipment

3. 100% Individually Tested for Peak Performance

Every single unit is tested individually — no sampling, no shortcuts — to ensure optical compliance and continuous operational stability. Curious how we do it? Take a virtual tour of our Test Center.

FAQ

Q1: Which Dell OS10 firmware releases support port breakout for this passive direct attach copper breakout cable? A: It works stably on OS10 10.4.x, 10.5.x mainstream builds. HYTOPTODEVICE validates each batch on Dell PowerSwitch hardware to cut deployment risk for Dell solution partners placing stock orders.

Q2: Can this passive direct attach copper breakout cable run on old Dell Force10 FTOS switches for 4×10G breakout? A: Most legacy Force10 FTOS devices lack native breakout profile support. Confirm operating system compatibility before purchase; this cable is optimized for modern Dell OS10 PowerSwitch.

Q3: Will Dell SmartFabric automatically identify this pre-programmed passive direct attach copper breakout cable during fabric setup? A: Yes, valid EEPROM data enables automatic recognition by SmartFabric. This simplifies zero-touch deployment for system integrators building Dell VxRail hyper-converged fabrics.

Q4: Can I order this passive direct attach copper breakout cable with custom EEPROM for hybrid Dell and SONiC white-box networks? A: Yes, HYTOPTODEVICE provides cross-platform custom EEPROM programming for bulk orders. It helps integrators standardize cabling specifications across mixed open networking environments.

Q5: Will OS10 trigger repeated transceiver fault logs if this passive direct attach copper breakout cable is used together with original Dell SFP+ optics? A: No, DAC and optical modules run independently per logical port. Once the breakout mapping is committed correctly, mixed media will not create persistent system alerts.

Q6: Is this passive direct attach copper breakout cable suitable as uplink cabling for Dell VxRail hyper-converged compute nodes? A: Yes, passive twinax delivers steady low-latency Ethernet transmission. Many Dell resellers buy this breakout cable to expand affordable 10G uplink density for VxRail clusters.

Q7: Will the breakout port mapping be retained after an OS10 firmware upgrade on Dell Z9100-ON? A: Breakout interface configurations save to startup-config. Major OS version 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 Dell EMC distributors? A: In-stock orders usually ship within 3–5 working days. HYTOPTODEVICE keeps ready inventory and supports expedited delivery for urgent Dell storage and hyper-converged project procurement.

Q9: Can this passive direct attach copper breakout cable carry DCB PFC lossless traffic for Dell PowerScale storage backends? A: Yes, passive copper does not interfere with priority flow control frames. It reliably transports lossless storage traffic, a good fit for buyers building Dell PowerScale backend fabrics.

Q10: What is the first troubleshooting step when one SFP+ breakout lane stays down on Dell S4148U-ON? A: First verify the OS10 breakout command and re-seat the SFP+ connector. Inactive lanes mostly come from missing breakout configuration or loose contact on newly purchased cables.

Q11: What storage 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 an extra paid OS10 license to activate 40G to 4×10G breakout on Dell S4128T-ON? A: Breakout is a base hardware feature for most S4128T-ON QSFP+ ports and does not require premium licensing. Buyers should review the official platform datasheet before ordering.

Q13: Can the four SFP+ tails of this passive direct attach copper breakout cable connect directly to 10G SFP+ NICs inside Dell PowerEdge servers? A: Yes, the SFP+ branches interoperate smoothly with standard 10G server network adapters. It is a cost-effective cabling choice for Dell fabrics paired with PowerEdge compute hardware.

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 Dell EMC storage and hyper-converged bidding.

Q15: Can the EEPROM signature of this passive direct attach copper breakout cable be rewritten after migration away from Dell OS10? A: Yes, HYTOPTODEVICE offers EEPROM reprogramming service. It allows resellers to reuse stocked breakout cables on other brand switches and improve inventory turnover.