Arista Networks CAB-Q-Q-3m Compatible 40G QSFP+ Passive Copper Cable, 3m (10ft)

The product on this page is the 3m (10ft) version of Arista Networks CAB-Q-Q-3m, built for 40G operation with QSFP+ to QSFP+. Its complete DAC construction simplifies the physical link, and the sections below cover the exact specification, rack-integration considerations and factory verification for this individual order code.

OEM Part Number: CAB-Q-Q-3mHT Part Number: CAB-Q-Q-3m

Product Highlights

Compatible alternative to Arista Networks CAB-Q-Q-3m
40G connectivity at 40Gbps
Interface configuration: QSFP+ to QSFP+
Fixed length and part number: 3m (10ft), CAB-Q-Q-3m
Conductor specification: 30AWG
Minimum bend radius: 35mm

Specifications

HT Part Number	CAB-Q-Q-3m
Arista Networks Compatible	CAB-Q-Q-3M
Manufacturer	HT
Connector Type	QSFP+ to QSFP+
Max Data Rate	40Gbps
Minimum Bend Radius	35mm
Wire AWG	30AWG
Cable Length	3m (9.84ft)
Jacket Material	PVC (OFNR)
Temperature	0 to 70°C (32 to 158°F)
Protocols	SFF-8436, QSFP+ MSA and IEEE 802.3ba

Cable Construction and Routing

This assembly uses 30AWG conductors, PVC (OFNR) jacket, minimum bend radius 35mm. These mechanical characteristics affect how the cable should be dressed behind the equipment. Avoid sharp edges, excessive ties and repeated tight bends close to the connector boots.

Passive Copper Operation

A passive DAC has no separate optical conversion stage. Its low-power, low-latency operation is useful for short equipment links, but the assembly must remain within the length and signaling mode accepted by both hosts.

Length Selection and Installation Planning

At 3m (10ft), this assembly can bridge non-aligned ports or adjacent racks while remaining a single direct-attach link. Support longer horizontal runs with suitable cable management and preserve space for cooling and future maintenance.

Position Within the Length Range

CAB-Q-Q-3m occupies the middle of this family between CAB-Q-Q-2M at 2m (7ft) and CAB-Q-Q-5M at 5m (16ft). It adds 1m over the shorter option for extra routing clearance, while the next longer version adds another 2m. Measure the managed path and choose this version when its reach is sufficient without creating the slack associated with the longer assembly.

Data-Center Design and Airflow

Select the assembly by both reach and rack layout. A direct connection removes separate module-and-patch-cord interfaces, but it still needs a bend-safe pathway and clear connector access. Keep cable bundles from blocking front-panel airflow, account for the listed interface power where applicable and choose a length that supports maintenance without leaving an unmanaged coil. For this assembly, the listed conductor specification is 30AWG; the minimum bend radius is 35mm; the jacket material is PVC (OFNR).

Network and Protocol Considerations

The intended application is determined by the host interface and protocol support. Listed interface and protocol references include SFF-8436, QSFP+ MSA and IEEE 802.3ba. Confirm that the host firmware and port configuration support the same operating mode.

Quality Assurance and Packaging

Each cable receives connector inspection and a functional link check before it is coiled with bend-safe slack and packed. Protective materials shield the connector housings during transport. Rack or project labels are available to keep length, part number and installation destination aligned. Neutral packaging and customer-specific packing documentation are available on request.

Ordering Information

Provide the OEM reference, HT part number, fixed length and quantity, together with the intended host interfaces. Rack-based quantities and packaging instructions can be included for larger deployments. Other lengths are separate products and should be entered on their own order lines. Keep CAB-Q-Q-3m associated with 3m (10ft) throughout the order and receiving record.

Arista Networks Compatibility and Factory Testing

Compatibility confirmation combines host identification with actual link establishment and diagnostic checks. The assembly is prepared for the stated OEM reference rather than selected only by connector shape. For a new data-center deployment, the equipment model, port mode and software release provide the most useful basis for a pre-order review. The check includes link stability and diagnostic indications, followed by a final inspection of both ends.

Frequently Asked Questions

Is this an original Arista Networks cable?

No. It is an HT-manufactured compatible alternative for equipment that specifies Arista Networks CAB-Q-Q-3m.

Are separate transceivers or patch leads required?

No. This is one complete direct-attach assembly. The ends are not detachable modules and should not be separated from the cable.

Can excess cable be folded into a compact bundle?

No. Use a supported, bend-safe service loop and observe the listed minimum bend radius. Do not crease the cable or tighten ties around the connector boots.

Will any matching connector operate at the same speed?

Not necessarily. Both hosts must support the stated rate, identification, lane mapping and any required breakout configuration; mechanical compatibility alone is insufficient.

Shipping and Lead Time

Available stock is generally dispatched within one to three working days after order confirmation, with production lead times advised for larger quantities. Delivery can be arranged by courier, air freight or sea freight, and goods may instead be handed to an appointed forwarder or shipped on the customer’s courier account.