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Small rectangular circuit board with gold edge connector and SFF-8639 socket

Innocard

Innocard EDSFF gender changer PCIe 4.0 x4 SFF-8639 12V 6.5A

SKU CH-AR67-SRQE4

EDSFF gender changer converts SFF-8639 to PCIe 4.0 x4 with 12 V hot-plug power limited to 6.5 A and built-in clock buffer for longer cables

  • Changer TypeEDSFF
  • Converts SFF-8639 storage to PCI Express 4.0 x4 for high-speed server storage
  • 12V hot-plug power with 6.5A programmable current limit and inrush slew-rate control
  • Built-in clock buffer and SMBus switch enable longer cable runs and reliable management
  • 400W TVS protection plus thermal shutdown safeguard the adapter and connected drives
  • Designed and made in Taiwan for industrial temperature range and BMC manageability

EDSFF gender changer for PCIe 4.0 x4

This adapter converts an SFF-8639 connector to a PCI Express 4.0 x4 interface. It is built for server and industrial environments that require hot-plug capability and out-of-band management. The board includes a clock buffer, SMBus switch and I/O expander to support Gen-Z 1C SSD control. Remote reset and wake functions are handled through dedicated translators.

Industrial-grade build with integrated protection

The unit operates across an industrial temperature range and features a 30u” gold SFF-8639 connector for reliable mating cycles. A 12V hot-plug power circuit with eFuse protection limits current to 6.5A and provides programmable inrush slew rate. Thermal shutdown and fault alert protect the host, while back-to-back FET operation and 400W TVS ESD protection secure the 12V input and output rails.

12V 6.5A hot-plug power decides compatibility

The adapter delivers up to 6.5A at 12V through its eFuse-protected hot-plug circuit. Systems that require a different current limit or voltage rail cannot use this changer. Buyers needing higher current capacity or a different connector standard must select another solution.

Highlights

  • Converts SFF-8639 storage to PCI Express 4.0 x4 for high-speed server storage
  • 12V hot-plug power with 6.5A programmable current limit and inrush slew-rate control
  • Built-in clock buffer and SMBus switch enable longer cable runs and reliable management
  • 400W TVS protection plus thermal shutdown safeguard the adapter and connected drives
  • Designed and made in Taiwan for industrial temperature range and BMC manageability

Specifications

Changer TypeEDSFF

Questions about this item

What does the PCIe 4.0 x4 interface cap in practice on this EDSFF gender changer?

The adapter converts an SFF-8639 connector to a PCIe 4.0 x4 link and includes a built-in 100 MHz clock buffer to drive longer traces and cables.

What physical connectors and clearances does this gender changer need to fit?

It has a built-in SFF-8639 connector with 30 µ” gold plating and a 12 V input protected by a 400 W TVS diode for ESD protection.

How is the card installed and which step do people often miss?

Install into a PCIe 4.0 x4 slot, connect 12 V power, then configure the SMBus switch at address 0x71 and the I/O expander at 0x41 for Gen-Z 1C PWRDIS control.

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