Innocard
Innocard SFF-8639 PCIe 4.0 to M.2 22x110mm gender changer
Converts a U.2 SFF-8639 port to an M.2 22x110mm NVMe slot with PCIe 4.0 support and 3.3V or 1.8V sideband switching
- Changer TypePCIe Gen4
- Converts M.2 NVMe to U.2 SFF-8639 interface
- PCIe 4.0 support for high-speed data transfer
- Sideband voltage switching between 3.3V and 1.8V
- Built-in power protection with 5.5A output current
- Designed and manufactured in Taiwan
PCIe 4.0 adapter for M.2 22x110mm SSDs
This Innocard adapter converts an SFF-8639 U.2 port to an M.2 NVMe slot built for the 22x110mm form factor. It runs at PCIe 4.0 speeds and includes a 12V-to-3.3V buck converter rated for 5.5A maximum output. A green LED shows when SSD power is ready and a red LED blinks during drive activity. Designed and made in Taiwan.
Suits builders adding a 22x110mm NVMe drive
The card targets installers who need sideband voltage switching between 3.3V and 1.8V for PERST#, CLKREQ#, WAKE# and VIO_CFG signals. It also provides SMBus level shifting and an isolated repeater plus a 64KB EEPROM. Buyers who want a different M.2 length or a native U.2 drive should look at something else.
Plug the adapter into the U.2 bay
The on-board hotswap controller limits inrush current and protects against overcurrent, undervoltage and thermal events. ESD protection is rated at 500V HBM. Ensure the 12V supply can deliver the converter's 5.5A peak and that the backplane respects the SFF-9402 Rev1.1 pin-out. Misaligned insertion or an undersized power rail are the typical failure points.
Highlights
- Converts M.2 NVMe to U.2 SFF-8639 interface
- PCIe 4.0 support for high-speed data transfer
- Sideband voltage switching between 3.3V and 1.8V
- Built-in power protection with 5.5A output current
- Designed and manufactured in Taiwan
Specifications
| Changer Type | PCIe Gen4 |
|---|
Questions about this item
Does my motherboard need a U.2 SFF-8639 port to use this adapter?
Yes, the adapter plugs into a U.2 SFF-8639 slot and presents an M.2 22x110mm socket for the NVMe drive.
Will a PCIe 3.0 U.2 port limit the speed of a Gen 4 NVMe SSD on this adapter?
The adapter is PCIe 4.0 compliant; in a PCIe 3.0 U.2 slot the drive will run at Gen 3 speeds.
What do the green and red LEDs show after I install the drive?
Green steady means 3.3 V power is ready; red blinking means the NVMe drive is active.
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