OWC Accelsior S PCIe Adapter for 2.5-inch SATA… vs 4 Ports Superspeed 5Gbps USB 3.0 PCI Express… — Head-to-Head (2026)

Side-by-side comparison. Specs, prices, user ratings, and our verdict.

OWC Accelsior S PCIe Adapter for 2.5-inch SATA 6G Expansion Card Compatible with Mac Pro (2006-2012), Mac Pro 2019 and PC Towers

$27.99

$25.99

*Price sourced from Amazon.com. Price and availability subject to change.

Spec	OWC Accelsior S PCIe Adapter for…	4 Ports Superspeed 5Gbps USB 3.0 PCI…
Brand	OWC	FebSmart
Style	PCIe Card	FS-U4-Pro
Weight	3g	—
Style Name	PCIe Card	FS-U4-Pro
Model Number	SSDACL6G.S	FS-U4-Pro Black
Compatibility	PC, Mac	Switch, Mac, Linux
Built-In Media	OWC Accelsior S	—
Mfr Part Number	SSDACL6G.S	FS-U4-Pro Black
Operating System	Mac OS	Windows 11, 10, 8.x, 7, Vista, XP (32/64bit) and Windows Server 2003, 2003R2, 2008, 2008R2, 2012, 2012R2, 2016, 2019, 2022 (32/64bit). Linux Kernels.
Compatible Devices	Mac Pro Mid 2006 - Mid 2012 (MacPro1,1 MacPro2,1 MacPro3,1 MacPro4,1 MacPro5,1) //Mac Pro and Mac Pro Rack Late 2019 (MacPro7,1), Xserve Xeon Late 2006-2009 (Xserve1,1 Xserve2,1 Xserve3,1)	Personal Computer
Hardware Interface	SATA 6.0 Gb/s	PCIE x 1, USB 3.0
Item Dimensions L x W x H	8.6"L x 6.3"W x 1.9"H	4.72"L x 2.75"W x 0.71"H
Global Trade Identification Number	00812437021035	—
Connectivity	—	USB

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