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Green circuit board with SlimSAS 8i connector and PCIe x8 gold fingers

Innocard

Innocard PCIe x8 Gen 4 ReDriver to SlimSAS 8i gender changer

SKU CH-Q137-4YNM1

Converts PCIe x8 Gen 4 signals to SlimSAS 8i with a ReDriver and clock buffer for extended cable reach

  • Changer TypePCIe Gen4
  • PCIe x8 Gen 4 at 16 GT/s for high-speed data transfer
  • Built-in ReDriver extends Gen 4 signal reach over longer cables
  • Integrated 100 MHz clock buffer supports extended trace lengths
  • Multiple side-band buffers maintain link integrity across distance
  • SFF-8654 8i connector follows SFF-9402 Rev 1.1 pin-out

PCIe x8 Gen 4 ReDriver adapter

This Innocard adapter converts a PCI Express 4.0 x8 interface to a SlimSAS 8i connector following the SFF-8654 pin-out defined by SFF-9402 Rev 1.1. It is built for system integrators and hardware engineers who need to route eight lanes of 16 GT/s bandwidth through a slim cable assembly. The on-board ReDriver and clock buffer extend signal reach beyond standard trace limits.

Sustained signal integrity over long cables

Integrated PCIe ReDriver, 100 MHz clock buffer and bidirectional SMCLK or SMDAT repeaters maintain link stability at full Gen 4 speed across extended trace lengths and longer cables. PERST#, WAKE#, CLKREQ# and PWRBRK# bus buffer gates preserve side-band signalling so the link remains up under continuous load. A green D1 LED confirms the add-in card is powered and ready.

Replaces passive gender changers that limit reach

Passive adapters cannot compensate for insertion loss on long runs, so they fail at full 16 GT/s rates. This active ReDriver board is worth the upgrade when cable routing exceeds typical backplane distances or when a dense SlimSAS 8i connection must carry eight lanes reliably. It is not for builds that stay within short on-board trace lengths.

Highlights

  • PCIe x8 Gen 4 at 16 GT/s for high-speed data transfer
  • Built-in ReDriver extends Gen 4 signal reach over longer cables
  • Integrated 100 MHz clock buffer supports extended trace lengths
  • Multiple side-band buffers maintain link integrity across distance
  • SFF-8654 8i connector follows SFF-9402 Rev 1.1 pin-out

Specifications

Changer TypePCIe Gen4

Questions about this item

How much power does the PCIe Gen 4 ReDriver add to the SlimSAS 8i link when running continuously?

The built-in ReDriver and clock buffer extend the 16 GT/s signal over longer cables without adding active cooling, so power draw stays minimal and heat remains low during all-day operation.

What motherboard slot and cable does the SlimSAS 8i gender changer need to function?

It requires a free PCIe x8 Gen 4 slot and a SlimSAS 8i (SFF-8654) cable with pin-out defined by SFF-9402 Rev 1.1 to connect the target device.

Will the SFF-8654 converter work with a PCIe Gen 3 backplane I already own?

Yes, the ReDriver and clock buffer support PCIe 4.0 at 16 GT/s and are backward compatible with Gen 3 speeds, so the adapter functions with older backplanes at their native rate.

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