20-Port PCIe X4 SATA III Expansion Card - Massive Drive Capacity

Our review of this 20-port PCIe X4 SATA III expansion card finds it best for builders and small server operators who need to connect many SATA drives without buying a full RAID controller. The single biggest reason to buy is straightforward: it exposes twenty SATA ports on a single PCIe slot, making it an efficient way to build a large software RAID pool or expand storage for a NAS or workstation. Installation is simple in standard towers and the built-in LEDs make drive status checks immediate.

Key Features

• 20 SATA ports: Allows one system to access up to twenty SATA drives together, simplifying large storage pools or software RAID setups.
• ASM1164 controller: Provides a reliable PCIe 3.0 X2 upstream link with stable downstream performance across all ports.
• Per-port bandwidth: Each SATA port can reach up to 85MB/s, keeping transfers consistent for mixed drive arrays.
• Drive LEDs: Twenty built-in LEDs give instant visual feedback with steady red for idle and flashing for read/write activity.
• Plug-and-play compatibility: Works with modern Windows (not XP), Mac OS, Linux and many NAS systems without manual driver installation.
• Flexible slot fit: Designed for PCIe X4/X8/X16 slots and ships with a full-size bracket for typical desktop cases.

Who It's For

This card is aimed at PC enthusiasts, home lab builders and small business users who need to expand internal SATA connectivity dramatically without adding multiple controllers. It is particularly useful when creating large software RAID arrays or consolidating many drives for media archives, backup pools, or a compact NAS build.

Those who should look elsewhere include users needing hardware RAID acceleration or people with mini or compact cases that cannot accept the pre-installed 12cm regular profile bracket. Also avoid it if you require native Windows XP support.

Pros & Cons

Pros

• High-density expansion lets one machine manage twenty SATA drives from a single card.
• Good per-port throughput with up to 85MB/s keeping mixed-drive arrays responsive.
• Clear drive monitoring via twenty status LEDs simplifies troubleshooting and activity checks.
• Broad plug-and-play compatibility across Windows (modern versions), Mac OS and Linux.

Cons

• No hardware RAID support, so software RAID or OS-level solutions are required for redundancy and volume management.
• Full-size bracket limits use in mini or compact chassis without modification.

Specifications

Our Verdict

For anyone who needs to attach many SATA drives without adding multiple cards, this expansion card offers clear value through density, stable per-port performance and simple compatibility. It is a practical choice for home labs, media servers and NAS builds where software RAID and case size permit its use.

Frequently Asked Questions

Does this card support hardware RAID?
No. The card does not provide hardware RAID; use your OS or a separate RAID controller for RAID functions.

Will it work on a modern Windows PC?
Yes. It is plug-and-play on current Windows versions, Mac OS and Linux, but not supported on Windows XP.

Can it fit in small form factor cases?
The card ships with a full-size 12cm bracket so mini or compact chassis may require bracket modification or a different mounting solution.