Innocard
Innocard DP8109 PCIe Gen4 to U.2 Dual Port Gender Changer
Connects two U.2 NVMe drives via a PCIe 4.0 x8 slot with 12 V hot-plug protection
- Changer TypePCIe Gen4
- Dual U.2 NVMe drives from a single PCIe 4.0 slot
- 16 GT/s bandwidth for high-speed storage performance
- Built-in 12V hot-plug power controller with 6.5A eFuse protection per drive
- SMBus switch and I/O expander enable remote SSD management
- REFCLK buffer fans out clock signals to both U.2 ports
PCIe Gen4 to U.2 dual-port adapter
The Innocard DP8109 converts a PCIe Gen4 x8 slot into two U.2 SFF-8639 ports for NVMe drives. It targets server builders and storage integrators who need to add high-speed U.2 bays to a platform that already supports Gen 4 16GT/s signalling and bifurcation.
Hot-plug power protection and management features
Each U.2 port receives a dedicated 12V hot-plug controller with a 6.5A programmable current limit, inrush slew-rate control and thermal shutdown. The card also provides SMBus switching, clock buffering, PERST# and PWRDIS control plus WAKE# and CLKREQ# auto-direction sensing for out-of-band management via BMC or IPMI.
Requires CPU and BIOS bifurcation support
The adapter splits the x8 link into two x4 data paths only when the processor and firmware both support bifurcation. Without that support the second U.2 port will not operate, so buyers must verify platform capability before purchase.
Highlights
- Dual U.2 NVMe drives from a single PCIe 4.0 slot
- 16 GT/s bandwidth for high-speed storage performance
- Built-in 12V hot-plug power controller with 6.5A eFuse protection per drive
- SMBus switch and I/O expander enable remote SSD management
- REFCLK buffer fans out clock signals to both U.2 ports
Specifications
| Changer Type | PCIe Gen4 |
|---|
Questions about this item
Will the 12 V hot-plug controller on the DP8109 need its fuse replaced after a fault event?
The built-in eFuse protection on each U.2 port is self-resetting; thermal shutdown and fault alert functions recover automatically without fuse replacement.
What limits sustained throughput when two U.2 SSDs run at Gen 4 16GT/s through the x8 link?
The x8 PCIe 4.0 connection splits into two x4 lanes, so combined SSD traffic cannot exceed the x8 host bandwidth.
How much heat does the adapter generate when both U.2 drives are powered from the 12 V rail all day?
Each port has a programmable 6.5 A current limit with slew-rate control; the controller dissipates only its own switching loss while delivering drive power.
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