864 Fibers. <20mm. Zero Congestion.
Fúxī and Longma High-Density Cable Assemblies — Precision-scheduled builds and agile-response braids for hyperscale backbones. Mini fan-out legs. Custom counts to 6912F.
288F–864F Standard
6912F Custom
VSFF In Stock
Procurement
One Optical Performance.
Two Business Rhythms.
Fúxī
The Scheduled Build
- For data center operators with multi-quarter construction timelines
- Precision-manufactured to exact port counts, lengths, and polarity maps
- Factory-terminated, pre-tested, shipped to site on the day the rack is ready
- No field splicing. No last-minute cable cutting. No inventory bloat.
Longma
The Emergency Response
- For operators who hit density faster than forecast
- Braided armored assemblies, pulled from existing Low density cables at stock and rapid-braided to spec
- Agile response: specification today, shipment this week
- Same IL/RL performance as Fúxī. Different procurement velocity.
Features
Main Features
Density in Diameter
864F in 17.0 mm OD
Competitors need 20+ mm for 576F. We deliver 864F in 17.0 mm — smaller outer diameter, higher fiber count, easier conduit fill. Custom constructions to 3456F and 6912F confirmed with design and termination capability.
Mini Fan-Out
1.6 mm Legs. No Airflow Block.
Traditional 2.0 mm fan-out legs create cable nests that obstruct rack airflow and complicate MACs. Our assemblies use 1.6 mm legs — 36% less bulk at the patch field. While competitors are still ramping VSFF, ADTEK has assemblies in stock today.
Bend-Insensitive Standard
G.657.A1/A2. Every Count.
Bend-insensitive fiber is non-negotiable in dense patch environments. All standard assemblies use G.657.A1/A2. SMF-28 and options available for specific link budgets. The fiber is not an upgrade — it is the baseline.
Asymmetric & Super-Trunk
Break Out on Your Terms
Standard symmetric breakout: 864F trunk to 144 × 6F legs. Asymmetric options: 864F to 96 × 8F + 48 × 4F. Super-Trunk: 6912F main cable to multiple 864F sub-trunks. Factory-terminated and polarity-verified. No field fan-out kits.
Specifications
Technical Specifications
| Parameter | Specification |
|---|---|
| Standard Fiber Counts | 288F, 576F, 864F |
| Custom Fiber Counts | 1728F, 3456F, 6912F |
| Outer Diameter (864F) | 17.0 mm |
| Fan-Out Leg Diameter | 1.6 mm (Custom), 2.0 & 2.3 mm (standard) |
| Fiber Types | G.657.A1/A2 (standard), SMF-28 (optional) |
| Jacket Options | LSZH, Plenum, CPR |
| Connector Options | MPO/MTP-8/12/16/24, MMC-16/24 SN-MT, LC, SC |
| Polarity Management | Method A/B/C, Universal, Custom mapping |
| Testing | 100% IL/RL/3D tested |
| Insertion Loss (Typical) | ≤0.35 dB (MPO-12), ≤0.20 dB (Low Loss grade) |
| Return Loss | ≥60 dB (UPC), ≥65 dB (APC) |
Scenarios
Deployment Scenarios
Fúxī for the Long Plan
A 500-rack AI cluster with a 12-month rollout. Fúxī assemblies are manufactured to the exact port count and length specification, tested at the factory, and delivered in phased shipments aligned to your rack-activation schedule. No excess cable. No emergency air freight.
Longma for the Surge
Your training cluster grew from 2,000 to 5,000 GPUs in one quarter. The original trunk design is now at 80% capacity. Longma braided assemblies are pulled from stock or rapid-manufactured to bridge the gap — same optical performance, different procurement timeline.
One Trunk. Many Destinations.
A 1728F Super-Trunk enters the MDA. It breaks out to 144 × 12F legs for standard patching, 48 × 4F legs for storage nodes, and 24 × 2F legs for management. All factory-terminated, all polarity-verified, all labeled. The field technician connects. They do not construct.
Compliance
Standards Alignment
Match Your Cable to Your Timeline
Request a Fúxī sample for your scheduled build, or a Longma braid for your emergency expansion. Discuss custom Super-Trunk counts and asymmetric breakout configurations with our engineering team.