CAB-Q-Q-100G-3M: Arista 100G QSFP28 Direct Attach Copper Cable 3m
Also listed as: CAB-Q-Q-100G-3M-AR
The Arista CAB-Q-Q-100G-3M is a 3-meter passive QSFP28 direct attach copper cable for 100Gbps inter-switch and storage links.
Specifications
| Part number | CAB-Q-Q-100G-3M |
|---|---|
| Brand | Arista |
| Type | Cables |
| Other numbers | CAB-Q-Q-100G-3M-AR |
| Status | current |
| Form factor | QSFP28 to QSFP28 |
| Speed | 100GbE |
| Length m | 3 |
| Cable type | Passive Copper Twinax |
| Wire gauge | 26 AWG |
About the CAB-Q-Q-100G-3M
The Arista CAB-Q-Q-100G-3M is a 3-meter passive QSFP28-to-QSFP28 copper twinax cable assembly providing 100 Gigabit Ethernet point-to-point connections. It supports 4 independent 25Gbps channels in each direction, providing 100Gbps full-duplex throughput. It is engineered for short-distance inter-switch uplinks and high-bandwidth storage connections in modern data center racks.
Compatibility
Supported on Arista 7050X3 and 7060X series switches equipped with QSFP28 ports, such as the 7050CX3-32S and 7060CX-32S. It connects directly between adjacent switches or high-speed storage targets without requiring optical transceivers or external electrical power.
How to identify a genuine unit
Features a robust black twinaxial cable jacket with 26 AWG internal conductors and heavy die-cast metal QSFP28 connector shells. The cable label indicates Arista part number CAB-Q-Q-100G-3M and serial code. Both ends integrate pull-tab release latches for straightforward installation and removal.
Buying used
Ensure that the cable bend radius conforms to manufacturer guidelines and that the heavy-gauge jacket is free from physical stress or kinks. Verify in Arista EOS that both connected switch ports establish 100Gbps link status immediately without generating cyclic redundancy check error counts.
Fits these models
Check compatibility with Arista
Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that Arista has tested with the Arista CAB-Q-Q-100G-3M.
- Compatibility Arista transceivers and cables
- Support Arista Support
FAQ
Can this cable link two Arista 100G switches directly?
Yes, it provides a high-speed zero-power 100GbE connection between adjacent switches.
Does it require active power?
No, it is a fully passive copper cable assembly.
Buying or selling CAB-Q-Q-100G-3M?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- Arista Transceivers and Cables Data Sheet, checked 2026-10-27