MikroTik DDQ+DA0001 QSFP-DD 400G Direct Attach Cable 1m

The MikroTik DDQ+DA0001 is the 1-metre direct attach cable companion to the CRS812 and CRS804 400G aggregation switches — purpose-built for same-rack and adjacent-rack connections where cable length is not a constraint and cost and simplicity are the priority.

Direct attach copper cables are the standard choice for short-range high-speed connections inside a data centre. There are no transceivers to source separately, no fiber runs to terminate, and no per-port optical power budgets to calculate. The integrated QSFP-DD modules on both ends are factory-matched to the cable — plug one end into the CRS812 or CRS804, the other into the peer device, and the link comes up at full 400G.

The 1-metre reach makes the DDQ+DA0001 the natural first choice for top-of-rack server-to-switch connections, same-rack switch stacking, and any 400G connection between devices in adjacent bays. Where 1m is not enough, the DDQ+DA0003 (3m) extends reach, and the DDQ+85MP01D optical module covers distances up to 100m via MTP/MPO-16 fiber.

Key features:

- QSFP-DD form factor — integrated modules on both ends, no separate transceivers required

- 400G aggregate bandwidth — full 400G passive copper direct attach

- 1-metre cable length — same-rack and adjacent-rack connections

- Passive copper design — no power consumption beyond the host port, no cooling overhead

- Energy-efficient — no active components, no laser management

- Plug-and-play — no configuration, no fiber termination, no optical power budget

- Compatible with: MikroTik CRS812, CRS804, and any device with a QSFP-DD 400G port

- MTBF ~100,000 hours at 25°C

- Product code: DDQ+DA0001

- Suggested price: USD 79.00

Note: This is a passive copper DAC. It is not suitable for distances beyond 1 metre. For 3-metre reach use the DDQ+DA0003; for distances up to 100m use the DDQ+85MP01D optical module with MTP/MPO-16 fiber.

Ideal for: same-rack 400G connections on CRS812 and CRS804 deployments, top-of-rack server-to-switch links, adjacent-rack switch stacking, and any 400G link where passive copper is preferred over optical for maximum cost efficiency and simplicity at distances of 1 metre or less.