ASUS Ascent GX10 Cluster Cable: 0.5m QSFP112 400G DAC
To cluster two ASUS Ascent GX10 workstations you need one 0.5m QSFP112 400G passive DAC cable in the QSFP112 port on each unit. The GX10 is built on NVIDIA's GB10 Grace Blackwell platform with the same ConnectX-7 NIC as the DGX Spark, so it takes the exact cable NVIDIA approves in its Spark Stacking documentation (Amphenol NJAAKK0006 / Luxshare LMTQF022-SD-R spec). Petronella Technology Group, Inc. sells it at $159 with free US shipping, in stock, shipping in 1 to 3 business days. As of August 2026, retail listings for the same NVIDIA-approved spec run $176 to $285, NVIDIA's own marketplace lists it at $99.99 but is chronically out of stock, and Amphenol's factory-direct store shows its whole QSFP112 line on backorder.
The exact cable your ASUS Ascent GX10 needs
| Cable | 0.5m QSFP112 400G passive direct-attach copper (DAC) |
| Approved spec | Amphenol NJAAKK0006 / Luxshare LMTQF022-SD-R (NVIDIA Spark Stacking docs) |
| Fits | Both QSFP112 ports on the ASUS Ascent GX10 ConnectX-7 NIC |
| Link rate | 200 Gb/s class (cable is 400G-rated for headroom) |
| For two GX10 units | One cable |
| For a three-node ring | Three cables (switchless, each box uses both ports) |
| Price | $159, free US shipping (in stock, ships in 1 to 3 business days) |
How many ASUS GX10 units can you cluster without a switch?
Each ASUS Ascent GX10 has two QSFP112 ports, so it follows the same NVIDIA-documented topology as every GB10 box: two units link directly with one cable, and three units form a switchless ring with three cables (NVIDIA's "Connect Three DGX Spark in a Ring Topology" playbook, where each box uses both ports for full pairwise connectivity). Three nodes is the switchless ceiling - with only two ports per unit, a fourth node cannot be cabled directly to all the others, so four or more GX10 units need a 200G-class QSFP switch. Clustering pools memory so you can run a model too large for one 128 GB node; it is a capacity play, not a speed boost, because each link runs around 25 GB/s.
Mixing vendors is fine: an ASUS GX10 clusters with a DGX Spark, Dell Pro Max GB10, MSI EdgeXpert, or any other GB10 box over the same cable, because they all share the ConnectX-7 NIC and QSFP112 port spec.