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Green circuit board with gold PCIe edge connector and silver U.3 port for 2.5 inch SSD

Innocard

Innocard PCIe Gen4 to U.3 2.5" SSD PWRDIS Enable

SKU CH-EWQ2-8W2K6

Converts a PCIe 4.0 x4 slot to U.3 SFF-8639 for 2.5" NVMe SSD with PWRDIS control and 12 V hot-plug power

  • Adapter typePCIe Gen4
  • Supports server BMC management for remote SSD control
  • Industrial-grade temperature range suits harsh environments
  • PCIe 4.0 x4 to U.3 2.5-inch SSD conversion
  • Built-in 12V hot-plug power with 6.5A current limit and TVS protection
  • On-board SMBus switch and I/O expander enable PWRDIS control

PCIe Gen4 to U.3 Adapter

This Innocard adapter converts a PCIe 4.0 x4 slot into a U.3 (SFF-8639) connector for 2.5" SSDs. It targets server and industrial integrators who need hot-plug capability and remote drive management through a standard add-in card form factor.

U.3 PWRDIS and PERST# Support

The on-board SMBus I/O expander at address 0x41 provides direct PWRDIS control for U.3 NVMe SSDs. A PCIe PERST# signal enables out-of-band reset, while a clock buffer at 0x6C drives longer cable traces without signal degradation.

Hot-Plug Power and Signal Integrity

Integrated 12 V hot-plug power with a 6.5 A programmable current limit and 400 W TVS protection supplies the drive safely. Bidirectional voltage translators for WAKE# and CLKREQ# maintain open-drain signalling over extended cables, and the design meets JESD 78 Class II latch-up immunity.

How it compares

Measured against everything we stock in Other Adapters & Couplers, at today’s prices. Recalculated every night.

Price $68.99
Pricier than about 90% of the 1,761 comparable items (median $18.99).

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Specifications

Product
Adapter typePCIe Gen4

Questions about this item

How does the PCIe 4.0 x4 link perform when a U.3 NVMe SSD is installed in a workstation?

The adapter converts a U.3 (SFF-8639) drive to a PCI Express 4.0 x4 connection, so the SSD runs at the full Gen4 lane speed the platform provides.

What does the on-board SMBus I/O expander at address 0x41 actually control?

It manages the U.3 SSD PWRDIS signal, letting the host enable or disable power to the drive over the SMBus.

What clearance and power connectors are required to mount a 2.5" U.3 drive on this card?

The board carries a built-in 30 µ SFF-8639 connector for the drive and supplies 12 V hot-plug power with a 6.5 A programmable current limit and 400 W TVS protection.

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