Reminder of what a card with Retimer function is:

• A standard PCIe to MCIO card, not retimer, is passive: it is only a connector support carrying PCIe lines to SSDs or a backplane. It is simple, inexpensive, but limited in cable length and sometimes unstable depending on the system.
• A card with Retimer function incorporates a chip that regenerates and stabilizes the signal. It is more expensive because it is more complex, but essential for long links, NVMe backplanes or modern high-speed configurations), which greatly improves compatibility and reliability.

It requires a motherboard, CPU and BIOS compatible with PCIe bifurcation, in order to split one PCIe x16 link into two x8 links or four x4 links for NVMe SSDs. Without this support, the card will only work in PCIe x8.

Compatibility:
The adapter does not require a driver for operation or communication with connected NVMe drives or risers.
Compatible with Windows, Mac, Linux, DOS....

Description : 
High performance retimer, with adaptive equalization compensating up to 36 dB of signal losses.
Silicon Innovation XRET5032 controller.
The card also supports CXL 2.0 Alternate Mode, enabling memory sharing between devices to improve overall performance and provide more flexible system configurations depending on workloads.
PCIe 5.0 x16 interface (32 GT/s)
Direct connection to NVMe PCIe SSDs via MCIO 8i to 2x SFF-8639 cable.
Two integrated MCIO 8i connectors, 8 PCIe lanes per port.
Bifurcation modes supported: 4× PCIe x4, 2× PCIe x8 (requires CPU + BIOS support).
Delivered with standard bracket (full height) and low-profile.
Recommended operating temperature: 5 to 55°C.
Low power consumption: min/max 4.95W/12.5W.
Dimensions 170.5mm x 68.9mm, weight 185g.

A standard PCIe to MCIO card, not retimer, is passive: it is only a connector support carrying PCIe lines to SSDs or a backplane. It is simple, inexpensive, but limited in cable length and sometimes unstable depending on the system. A card with Retimer function incorporates a chip that regenerates and stabilizes the signal. It is more expensive because it is more complex, but essential for long links, NVMe backplanes or modern high-speed configurations), which greatly improves compatibility and reliability. It requires a motherboard, CPU and BIOS compatible with PCIe bifurcation, in order to split one PCIe x16 link into two x8 links or four x4 links for NVMe SSDs. Without this support, the card will only work in PCIe x8. The card also supports CXL 2.0 Alternate Mode, enabling memory sharin