SMUGDESK
SMUGDESK SlimSAS SFF-8654 8i to 2x SFF-8654 4i Breakout Cable 1m
Splits one SFF-8654 8i port into two SFF-8654 4i ports for PCIe 4.0 and SAS 4.0 at 24Gbps per lane with 85-ohm impedance
- Splits one 8-lane port into two 4-lane interfaces for flexible storage expansion
- Supports 24Gbps per lane via PCIe 4.0 and SAS 4.0 standards
- 85-ohm controlled impedance prevents signal crosstalk and attenuation at high speeds
- 3ft length with braided sleeve enables tidy routing in 1U and 2U servers
- Gold-plated latch-locked connectors resist vibration for reliable long-term operation
Breakout cable for dense servers
This 1-metre internal cable splits a single SFF-8654 8i port into two independent SFF-8654 4i connections. It is built for enterprise servers, NAS arrays and high-performance workstations that need to distribute PCIe 4.0 or SAS 4.0 bandwidth to dual NVMe U.2 backplanes, HBA cards or SSD modules. The design targets administrators who require reliable lane splitting in compact chassis.
Controlled impedance and locking connectors
An 85-ohm differential impedance suppresses crosstalk and signal distortion at full 24 Gbps per lane. A flexible braided sleeve protects the conductors during routing inside 1U and 2U racks. Gold-plated SlimSAS connectors with latch locks resist vibration-induced disconnects, supporting continuous data-centre operation without signal degradation.
Verify port layout and lane requirements
Confirm the host side exposes an SFF-8654 8i interface and each target device accepts an SFF-8654 4i link. The cable is backward compatible with PCIe 3.0 and SAS 3.0 protocols, but connected hardware must negotiate the appropriate lane count. Buyers who need a straight-through 8i-to-8i link or a different breakout ratio should select an alternative cable.
Highlights
- Splits one 8-lane port into two 4-lane interfaces for flexible storage expansion
- Supports 24Gbps per lane via PCIe 4.0 and SAS 4.0 standards
- 85-ohm controlled impedance prevents signal crosstalk and attenuation at high speeds
- 3ft length with braided sleeve enables tidy routing in 1U and 2U servers
- Gold-plated latch-locked connectors resist vibration for reliable long-term operation
Specifications
No published specifications for this item yet.
Questions about this item
What PCIe and SAS versions does the SFF-8654 8i to 2x SFF-8654 4i breakout cable support, and what is the maximum per-lane speed?
The cable follows PCIe 4.0 and SAS 4.0 standards, supporting up to 24Gbps per lane for lossless data transmission. It is backward compatible with PCIe 3.0 and SAS 3.0 protocols.
What physical space and connector clearance does the 1m SlimSAS breakout cable require inside a server chassis?
The cable measures 1 meter (3.3ft) total length with a flexible braided shielding sleeve designed for neat routing inside 1U/2U rack servers and storage enclosures. Latch-locked SFF-8654 connectors need enough clearance for the locking mechanism to engage fully.
How is the SlimSAS breakout cable installed, and what step ensures a secure connection that is often missed?
Align each gold-plated SFF-8654 connector with its port and press firmly until the integrated latch clicks into place, locking the connector. The step often missed is verifying the latch is fully engaged on both 4i ends and the 8i host end to prevent vibration-induced disconnection.
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