Arista Networks A-D400-Q400 Compatible 400G QSFP112 4 x 100G PAM4 to 400G QSFP-DD 8 x 50G PAM4 Active Optical Cable

Product Highlights

• HT-manufactured compatible alternative for Arista Networks A-D400-Q400
• 400G aggregate connectivity at 400Gbps
• Interface configuration: QSFP112 to QSFP-DD
• AOC
• Length configurations covered: 1m (3ft), 2m (7ft), 3m (10ft), 5m (16ft), 7m (23ft), 10m (33ft), 15m (49ft), 20m (66ft), 25m (82ft) and 30m (98ft)
• Power consumption: 10W (QSFP112 End) 14W (QSFP-DD End)

Available Lengths and Corresponding Part Numbers

The documented configurations are 1m (3ft), 2m (7ft), 3m (10ft), 5m (16ft), 7m (23ft), 10m (33ft), 15m (49ft), 20m (66ft), 25m (82ft) and 30m (98ft). 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

• A-D400-Q400-1M
• A-D400-Q400-2M
• A-D400-Q400-3M
• A-D400-Q400-5M
• A-D400-Q400-7M
• A-D400-Q400-10M
• A-D400-Q400-15M
• A-D400-Q400-20M
• A-D400-Q400-25M
• A-D400-Q400-30M

Specifications

Field Installation and Maintenance

Inspect the route and both connectors before installation, then support the cable without pulling on either connector housing. During maintenance, release the latch properly rather than using the cable as a handle. Keep protection on unused ends, and if the assembly is removed for later use, coil it loosely and record its part number so the same length can be returned to service. For this series, keep the interface rate, AOC construction and length-specific OEM reference together throughout that review.

Applications and Deployment

An AOC removes the separate module-and-fiber interfaces from a high-speed connection. Both optical ends remain attached to the cable, simplifying polarity control and connector handling. Host identification, wavelength plan, aggregate rate and any breakout configuration must still agree across the link. For this series, the listed interface is QSFP112 to QSFP-DD and the aggregate rate is 400G.

Cable Construction and Routing

The specification table records the jacket material is OFNP; the minimum bend radius is 30mm; the power consumption is 10W (QSFP112 End) 14W (QSFP-DD End). 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.

Quality Assurance and Packaging

The cable and both connectors are inspected before a functional link test. Connector protection and bend-safe packing reduce handling damage during transport and storage. Customer or site labels can be added for field inventories, with different lengths separated to simplify issue and return of spare assemblies. Both connector ends are inspected as part of the complete assembly, and protective packing is selected to avoid tight bends during transport and storage.

Arista Networks Compatibility and Factory Testing

A field-ready cable needs both correct identification and a stable operating link. Our pre-packing check therefore includes the connectors, host recognition and link behavior. For equipment with uncertain revision history, providing the host model and software release helps identify compatibility requirements before the assembly reaches the installation site. 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

Request the cable by its exact part number and length, and state the equipment model if compatibility confirmation is needed. Site orders can list quantities by rack or installation team. Any requested label should retain the part number so a removed or spare cable can still be identified accurately. 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 A-D400-Q400 identifies the product family; the linked page provides the final length-specific identity.

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