This article covers StarTech.com 外部eSATA 2ポート.

Overview

The StarTech.com PEXESAT322I is a PCI Express x1 controller card that adds two SATA 3.0 (6Gbps) ports to any desktop PC. It supports both internal SATA and external eSATA connections via a jumper-selectable configuration, making it a flexible and affordable solution for expanding storage capacity. Powered by the ASMedia ASM1061 chipset, the card works with PCIe 2.0 x1 slots and supports FIS-based port multipliers, NCQ, and ATA/ATAPI commands. This means you can connect multiple drives through a single port or add optical drives without compatibility headaches.

Connectivity & Compatibility

Interface: PCI Express x1 (works in x4, x8, x16 slots) Port configuration: 2x eSATA 3.0, or 2x internal SATA 3.0, or 1x eSATA + 1x internal SATA (jumper selectable) Supported devices: SATA SSDs, HDDs, optical drives (CD/DVD/Blu-ray) OS support: Windows (plug-and-play, no additional drivers required) * Low-profile bracket included for small-form-factor PCs

Product Info

Released around 2012, the PEXESAT322I remains a relevant solution for legacy SATA expansion. It typically retails for around ¥6,000 (~$40 USD), backed by StarTech.com's 2-year warranty and lifetime free technical support. The package includes a standard bracket (pre-installed), a low-profile bracket, and one 7-pin SATA cable. Market positioning is entry to mid-range. It won't match NVMe speeds, but it's a cost-effective way to reuse existing SATA drives or add ports when your motherboard runs out.

Best Use Cases

Adding extra SATA ports to a motherboard that has run out of native connections Connecting external eSATA enclosures for backup or media storage Repurposing an older PC as a file server or NAS with additional drives Installing an internal optical drive on a modern motherboard that lacks SATA ports

Things to Consider

PCIe 2.0 x1 bandwidth caps out at roughly 500MB/s — fine for HDDs and SATA SSDs, but not for NVMe-class performance. Port multiplier support depends on your enclosure; not all eSATA enclosures support PM, so verify compatibility beforehand. The internal SATA ports are located on the card itself, which may require careful cable routing inside the case. If your motherboard already has free SATA ports, this card is unnecessary. It's strictly for port expansion, not performance upgrades.

Product Disclosure (Amazon)

  • Manufacturer: StarTech.com(スターテック)
  • Seller: オフィス・モア (in 神戸)
  • Fulfilled by: オフィス・モア (in 神戸)
  • ASIN: B00952N2DQ
  • Note: This article covers a manufacturer-made product based on Amazon listing details.