Arista Networks C-D800-D800-1M Compatible 800G QSFP-DD 8 x 100G PAM4 Passive Copper Twinax Cable, 1m (3ft)
For project documentation, Arista Networks C-D800-D800-1M and this cable’s physical length should be recorded together. The product described here is a 1m (3ft) DAC assembly for 800G links, using QSFP-DD to QSFP-DD. Its OEM cross-reference, HT part number, specification table and packing options support traceable ordering and installation records.
OEM Part Number: C-D800-D800-1MHT Part Number: C-D800-D800-1M
Product Highlights
- Compatible alternative to Arista Networks C-D800-D800-1M
- 800G connectivity at 800Gbps
- Interface configuration: QSFP-DD to QSFP-DD
- Fixed length and part number: 1m (3ft), C-D800-D800-1M
- Cable construction: Passive DAC
- Conductor specification: 28AWG
- Maximum power consumption: 0.005W Per End
- Minimum bend radius: 81mm
Specifications
| HT Part Number | C-D800-D800-1M |
|---|---|
| Arista Networks Compatible | C-D800-D800-1M |
| Manufacturer | HT |
| Form Factor | QSFP-DD to QSFP-DD |
| Max. Data Rate | 800Gbps |
| Media | Copper |
| Cable Type | Passive DAC |
| Cable Length | 1m (3ft) |
| Jacket Material | PVC (OFNR) |
| Minimum Bend Radius | 81mm |
| Wire AWG | 28AWG |
| Max. Power Consumption | 0.005W Per End |
| Modulation Format | 8x 100G-PAM4 |
| Commercial TemperatureRange | 0 to 70°C (32 to 158°F) |
| Application | 800G Ethernet |
| Protocols | QSFP-DD MSA, CMIS Rev4.0, IEEE 802.3ck |
Signal and Lane Configuration
The listed modulation format is 8x 100G-PAM4. Both host interfaces must be configured for the same aggregate rate and lane arrangement. A connector that fits mechanically does not by itself guarantee that the remote port supports this encoding or breakout mode.
Power and Thermal Planning
The rated power consumption is 0.005W Per End. Include this load in the host-port power and thermal budget, especially in densely populated switches. Maintain front-panel clearance and do not bundle the cable so tightly that it obstructs airflow around the connectors.
Cable Construction and Routing
This assembly uses 28AWG conductors, PVC (OFNR) jacket, minimum bend radius 81mm. 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.
Network and Protocol Considerations
The intended application is 800G Ethernet. Listed interface and protocol references include QSFP-DD MSA, CMIS Rev4.0, IEEE 802.3ck. Confirm that the host firmware and port configuration support the same operating mode.
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 1m (3ft), C-D800-D800-1M is a practical choice for direct connections within one rack. Route the cable along the intended management path rather than pulling it diagonally across adjacent connectors, and leave enough clearance for insertion, removal and front-panel airflow.
Position Within the Length Range
C-D800-D800-1M occupies the middle of this family between C-D800-D800-0.5M at 0.5m (2ft) and C-D800-D800-1.5M at 1.5m (5ft). It adds 0.5m over the shorter option for extra routing clearance, while the next longer version adds another 0.5m. Measure the managed path and choose this version when its reach is sufficient without creating the slack associated with the longer assembly.
Project Documentation and Cable Identification
Large deployments are easier to audit when the order code, physical length and endpoint record agree. Keep the OEM reference in the compatibility document and use the HT part number on the packing list. Where several lengths arrive together, labels and carton groups can be arranged by rack or port plan so installers do not have to identify cables by appearance alone. For this assembly, the listed conductor specification is 28AWG; the minimum bend radius is 81mm; the stated power consumption is 0.005W Per End; the jacket material is PVC (OFNR).
Arista Networks Compatibility and Factory Testing
Factory verification links the compatibility identity to the exact physical assembly described on this page. Identification, connector condition and live link behavior are checked before packing. Customers can submit equipment and firmware details with the project documentation for a more specific pre-order compatibility review. Both connectors are examined before the operating test, which includes link stability and diagnostic indications.
Frequently Asked Questions
Is this an original Arista Networks cable?
No. It is an HT-manufactured compatible alternative for equipment that specifies Arista Networks C-D800-D800-1M.
Does this order code cover multiple lengths?
No. C-D800-D800-1M refers here to 1m (3ft). Every other verified length has a separate part number and page in the length list.
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.
Ordering Information
Use the listed HT part number for ordering and retain the OEM reference as the host-compatibility cross-reference. Send quantities by length, along with any rack-based packing or label instructions. If the project has mixed equipment, include the host model for each group rather than relying only on the aggregate cable rate. Quantity and any labeling instructions should be attached specifically to C-D800-D800-1M.
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.
Quality Assurance and Packaging
Inspection and link testing are completed before the cable enters its protective packaging. Project orders can be packed and labelled by length, rack or customer reference, with packing documentation that makes received quantities straightforward to reconcile against the installation schedule. Neutral packaging and customer-specific packing documentation are available on request.
