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SFF-8639 male to female gender changer with hot-swap power protection IC

Innocard

Innocard Gen-Z SFF-8639 Male to Female Gender Changer with Hot Swap Power Protection IC

SKU CH-8W2J-6RFD1

A PCIe Gen 4 gender changer with hot-swap power protection for SFF-8639 connections

  • Changer TypePCIe Gen4
  • PCIe Gen 4 signal integrity at 16 GT/s via integrated ReDriver
  • Hot-swap safe with built-in power protection IC on SFF-8639
  • Extends reach using 100 MHz clock buffer for longer cables
  • Full side-band support including PERST#, WAKE#, CLKREQ# and PWRDIS translators
  • Compliant with SFF-9402 1.1 and PCIe 4.0 specifications

PCIe Gen 4 Gender Changer

The Innocard Gen-Z SFF-8639 male-to-female gender changer connects a male SFF-8639 plug to a female SFF-8639 receptacle. It is built for server and high-performance computing installations that need a straight-through connection with integrated hot-swap power protection. The adapter suits technicians who must extend or reorient Gen 4 links without adding active circuitry.

Hot-swap protection and signal integrity

A built-in protection IC guards the bus during live insertion or removal, preventing transients from reaching attached devices. The design follows the SFF-8639 pin-out and PCI Express Base Specification Rev 4.0, so the link negotiates at 16 GT/s without extra drivers. No external power or configuration is required; the changer passes side-band signals such as PERST#, WAKE# and CLKREQ# transparently.

Replaces bare cable couplers

The unit replaces simple gender-changing couplers that lack hot-swap safeguards and signal conditioning. The upgrade is worth it when a rack server, microserver or hardware accelerator chassis demands reliable live drive swaps and longer trace lengths at Gen 4 speeds. It is not for builds that need protocol conversion, port multiplication or a different form factor such as OCuLink or M.2.

Highlights

  • PCIe Gen 4 signal integrity at 16 GT/s via integrated ReDriver
  • Hot-swap safe with built-in power protection IC on SFF-8639
  • Extends reach using 100 MHz clock buffer for longer cables
  • Full side-band support including PERST#, WAKE#, CLKREQ# and PWRDIS translators
  • Compliant with SFF-9402 1.1 and PCIe 4.0 specifications

Specifications

Changer TypePCIe Gen4

Questions about this item

What PCIe generation does the SFF-8639 gender changer support?

The adapter is designed for PCIe Gen4 operation at 16 GT/s per differential pair.

Does the built-in protection IC manage power during continuous hot-swap cycles?

Yes, a dedicated Hot Swap Power Protection IC handles PWRDIS and voltage-level translation for safe insertion and removal.

Which existing server connector must be present to use this gender changer?

A Gen-Z SFF-8639 male port on the host side is required to mate with the changer's female receptacle.

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