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SI-MPE40095 Low Profile SATA Mini PCIe RAID

This adapter card adds two SATA III ports through a mini PCI Express half-size slot. It is built for systems that need extra internal drive connections without a full-size expansion bracket. The low-profile design fits compact enclosures where standard cards cannot be installed. Buyers adding storage to embedded boards or small-form-factor PCs will find the form factor suitable.

Mini PCIe lane and bandwidth limits

The mini PCI Express interface provides a single lane of data transfer, so the combined throughput of both SATA ports cannot exceed that link’s capacity. RAID 0 striping across two drives will be constrained by the upstream connection rather than the SATA III specification itself. Systems with only one mini PCIe slot must also choose between this controller and other expansion needs such as wireless cards.

Check slot keying and BIOS support

Verify that the target board has a full-size mini PCIe slot wired for PCI Express signalling rather than USB-only or mSATA-only pinouts. The card requires a half-size mechanical footprint, so ensure the mounting standoffs match that length. Confirm the system firmware can initialise an add-in RAID controller at boot if the drives must be visible before the operating system loads. Buyers who need hot-plug support or external ports should look elsewhere.