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Green circuit board with U.3 male connector and EDSFF slot plus LEDs

Innocard

Innocard SFF-8639 PCIe 4.0 to EDSFF 1C+12V Hot plug Power Protection Adapter

SKU CH-0WNS-8WJJ1

Connects U.3 SFF-8639 host to EDSFF 1C SSD with 12 V hot-plug eFuse protection and status LEDs

  • Changer TypeEDSFF
  • Hot-plug 12 V eFuse protects SSD during insertion
  • PCIe 4.0 compliant SFF-8639 interface enables high-speed data transfer
  • Four status LEDs show power, presence and activity at a glance
  • Supports SMBus, PWRDIS and DualPortEn for full management control
  • JP1 header provides 3.3 Vaux when host supply is absent

PCIe 4.0 to EDSFF 1C Adapter

This adapter converts a U.3 SFF-8639 interface to an EDSFF 1C connector with integrated 12 V hot-plug power protection. An on-board eFuse circuit safeguards the drive during insertion and removal while the host system remains powered. Compliance with PCI Express Base Specification Rev 4.0 and NVM Express 1.2 ensures full Gen-4 bandwidth for enterprise SSDs. LEDs report 12 V and 3.3 Vaux readiness, drive presence and Gen-Z activity at a glance.

Enterprise storage integrators and server builders

The board targets engineers adding Gen-Z 1C SSDs to platforms that expose a U.3 backplane. Systems lacking a 3.3 Vaux supply must enable the JP1 header before use, so integrators without BIOS or BMC control over that rail should verify firmware support first. Workstations or consumer chassis without hot-plug backplane infrastructure fall outside the intended deployment scenario.

Built-in 12 V hot-plug eFuse protection

The integrated power IC manages inrush current and fault isolation when an EDSFF 1C drive is swapped live, preventing damage to both the SSD and the host backplane. This single hardware safeguard determines whether the adapter can be used in true hot-plug bays or must be restricted to cold-swap maintenance windows. All other signals — SMBus, PWRDIS, DualPortEn and presence detect — pass through unchanged.

Highlights

  • Hot-plug 12 V eFuse protects SSD during insertion
  • PCIe 4.0 compliant SFF-8639 interface enables high-speed data transfer
  • Four status LEDs show power, presence and activity at a glance
  • Supports SMBus, PWRDIS and DualPortEn for full management control
  • JP1 header provides 3.3 Vaux when host supply is absent

Specifications

Changer TypeEDSFF

Questions about this item

Will the 12V eFuse protection circuit need replacement after repeated hot-plug cycles?

The built-in 12V hot-plug power IC uses an eFuse protection circuit designed to handle hot-plug events without degradation, so no scheduled replacement is required.

What limits sustained throughput on this PCIe 4.0 adapter?

The adapter complies with PCI Express Base Specification Rev 4.0, so the x4 lane bandwidth ceiling of that standard is the first limit under continuous load.

How much extra heat or power draw does the adapter add when running all day?

The board only carries the 12V eFuse IC, four status LEDs and a 3.3Vaux header, adding negligible heat and milliwatt-level draw beyond the SSD itself.

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