Arista Networks CAB-Q-2Q-100G Compatible 100G QSFP28 4 x 25G NRZ to 2 x 50G QSFP28 2 x 25G NRZ Passive Copper Breakout Cable
A 100G direct-attached link depends on the correct host identity, interface mode and physical length. This page covers the Arista Networks CAB-Q-2Q-100G compatible DAC series in QSFP28 to 2x SFP28, including 0.5m (2ft), 1m (3ft), 2m (7ft), 3m (10ft) and 5m (16ft). Each documented length-specific OEM reference is linked separately where an individual product page is available.
Series Part Number: CAB-Q-2Q-100GHT Part Number: CAB-Q-2Q-100G
Product Highlights
- HT-manufactured compatible alternative for Arista Networks CAB-Q-2Q-100G
- 100G aggregate connectivity at 100Gbps
- Interface configuration: QSFP28 to 2x SFP28
- Passive Breakout DAC / Copper
- Length configurations covered: 0.5m (2ft), 1m (3ft), 2m (7ft), 3m (10ft) and 5m (16ft)
- Conductor specification: 30AWG
- Power consumption: 0.5W
- Operating temperature: 0-70℃(32 to 158°F)
Available Lengths and Corresponding Part Numbers
The documented configurations are 0.5m (2ft), 1m (3ft), 2m (7ft), 3m (10ft) and 5m (16ft). Each link below opens the separate product page for that physical length and its corresponding OEM part number. Select the exact assembly required by the route and purchase order; custom project lengths can be discussed separately.
Compatible OEM Part Numbers
- CAB-Q-2Q-100G-0.5M
- CAB-Q-2Q-100G-1M
- CAB-Q-2Q-100G-2M
- CAB-Q-2Q-100G-3M
- CAB-Q-2Q-100G-5M
Specifications
| Arista Networks Compatible | CAB-Q-2Q-100G-3M |
|---|---|
| Manufacturer | HT |
| HT Part Number | CAB-Q-2Q-100G |
| Form Factor | QSFP28 to 2x SFP28 |
| Max. Data Rate | 100Gbps |
| Media | Copper |
| Cable Type | Passive Breakout DAC |
| Cable Length Options Covered | 0.5m (2ft), 1m (3ft), 2m (7ft), 3m (10ft) and 5m (16ft) |
| Jacket Material | PVC (OFNR) |
| Minimum Bend Radius | 10D/5D (Dynamic/Static) |
| Wire AWG | 30AWG |
| Max. Power Consumption | 0.5W |
| Modulation Format | QSFP28-4x 25G-NRZ SFP28-2x 25G-NRZ |
| Commercial Temperature Range | 0-70℃(32 to 158°F) |
| Application | 100G/50G Ethernet, 128G Fibre Channel |
| Protocols | IEEE 802.3, QSFP28 MSA, SFP-8665, SFF-8636 |
Applications and Deployment
Passive twinax cables are commonly selected for short switch-to-switch, switch-to-server and accelerator connections within or between nearby racks. With no separate optical conversion stage, they offer a simple low-power physical link. The assembly must nevertheless remain within the length, signaling rate and qualification limits accepted by both hosts. For this series, the listed interface is QSFP28 to 2x SFP28 and the aggregate rate is 100G. The stated application is 100G/50G Ethernet, 128G Fibre Channel.
Cable Construction and Routing
The specification table records the conductor specification is 30AWG; the jacket material is PVC (OFNR); the minimum bend radius is 10D/5D (Dynamic/Static); the operating temperature is 0-70℃(32 to 158°F); the power consumption is 0.5W. Use those values when preparing the rack pathway and receiving checklist. Do not pull a connector by its cable, compress the run under tight ties or force excess length into a sharp coil. Connector protection should remain in place until the assembly is ready for insertion.
Procurement and Port-Mapping Review
A useful purchase order should identify the host platform, the expected OEM code and the exact cable length as separate pieces of information. This prevents a physically similar assembly from being substituted when the port identification or reach is different. For mixed-length installations, prepare one order line per part number and reconcile each delivered cable with its intended pair of ports. For this series, keep the interface rate, DAC construction and length-specific OEM reference together throughout that review.
Arista Networks Compatibility and Factory Testing
Our procurement-oriented compatibility check begins with the OEM reference and ends with a live host link. We record the physical length separately from the identification configuration, so the cable supplied for this page remains the stated version rather than a generic length substitute. Series-level inspection is followed by the exact length and OEM configuration selected for dispatch. Functional verification includes link establishment and diagnostic indications where the host exposes them.
Ordering Information
For a clear bill of materials, quote the OEM reference, HT part number, length and quantity on the same line. Add the switch or server model and software release when a pre-order review is required; project labels can repeat those details for receiving and installation teams. For this series, follow the corresponding length link, quote that exact OEM part number and keep different lengths on separate order lines. HT part number CAB-Q-2Q-100G identifies the product family; the linked page provides the final length-specific identity.
Quality Assurance and Packaging
Before packing, the assembly is checked for connector condition, identification and link operation. Cables for multi-line orders can be labelled and grouped by part number, making it easier to match each length to the procurement record without opening every protective bag. Both connector ends are inspected as part of the complete assembly, and protective packing is selected to avoid tight bends during transport and storage.
Shipping and Lead Time
Standard configurations normally ship within one to three working days, with production lead times confirmed for larger quantities. International courier, air freight and sea freight are available; customer courier accounts and nominated forwarders are accepted.
Frequently Asked Questions
Is this an original Arista Networks cable?
No. It is an HT-manufactured compatible cable for equipment that specifies CAB-Q-2Q-100G, not an original Arista Networks-branded product.
Are different lengths and OEM part numbers separate products?
Yes. Where a length has its own OEM reference, follow the corresponding link above and order that exact part number on its own line. Do not substitute another length only because the connector arrangement is the same.
Does this DAC cable require separate modules at each end?
No. The connector ends and cable form one complete direct-attach assembly. The ends are not detachable standalone transceivers, and the complete product is tested together.
What information helps confirm compatibility?
Provide the equipment manufacturer and model, port type, hardware revision and software release, together with the required OEM reference, length and quantity. Breakout projects should also identify the intended lane configuration.