OWC Accelsior S
2.5-inch SATA 6G SSD to PCIe Adapter Card for Mac Pro (Late 2019 - Current), Mac Pro (2006 - 2012), PC Towers & Thunderbolt PCIe Expansion Chassis
Mfr P/N: SSDACL6G.S OWC SKU: OWCSSDACL6G.S
Add a 2.5-inch SATA 6G Drive to your Mac Pro or PC Tower
- Bring 2.5-inch drive expansion to any PCIe x4 slot
- Directly mount any standard 2.5-inch drive
- Sustained speeds up to 550 MB/s
- Enhance SATA 3G systems with SATA 6G support
- Easy installation, no drivers required
- 3 Year OWC Limited Warranty
Give Your Mac Pro Tower or PC a SATA 6G Performance Boost
Internal Storage Expansion at Lightning Speed
Just Plug and Play
Includes
- (1) OWC Acceslsior S PCIe Expansion Card
- (1) Quick Start Guide for OWC Accelsior S
- 3 Year OWC Limited Warranty
Specs
Internal Connectivity
- (1) SATA 6.0Gb/s
Card Interface
- PCIe
PCIe Bus Interface
- PCI Express 2.0 x2
PCIe Form Factor
- PCIe x4 half length, half height
- Compatible with PCIe x4 slots or larger
Chipset / Controller
- Asmedia 1062
Mac OS Compatibility
- Mac OS X 10.6 Snow Leopard
- Mac OS X 10.7 Lion
- Mac OS X 10.8 Mountain Lion
- OS X 10.9 Mavericks
- OS X 10.10 Yosemite
- OS X 10.11 El Capitan
- macOS 10.12 Sierra
- macOS 10.13 High Sierra
- macOS 10.14 Mojave
- macOS 10.15 Catalina
- macOS 11.x Big Sur
- macOS 12.x Monterey
- macOS 13.x Ventura
- macOS 14.x Sonoma
- macOS 15.x Sequoia
PC OS Compatibility
- Windows XP
- Windows XP 64-bit Edition
- Windows XP Professional x64 Edition
- Windows Vista
- Windows 7 32-bit Edition
- Windows 7 64-bit Edition
- Windows 8 32-bit Edition
- Windows 8 64-bit Edition
- Windows 8.1 32-bit Edition
- Windows 8.1 64-bit Edition
- Windows 10 32-bit Edition
- Windows 10 64-bit Edition
- Windows Server 2019
- Windows Server 2022
- Windows 11
Other Requirements
- Computer host or PCIe chassis with an available slot that allows for a card that is full height, half length, and PCIe 2.0 x2 or greater.
Dimensions
- Height: 4.8 cm (1.9 in)
- Length: 21.8 cm (8.6 in)
- Width: 16.0 cm (6.3 in)
Weight
- 198.0 g (0.44 lbs)
Certifications
- RoHS Compliant
Reach Certification
- Yes
Country of Origin
- Taiwan
TAA Compliance
- Yes
Ambient Temperature
- Operating: 32°F to 158°F (0°C to 70°C)
- Non-Operating: 131°F to 302°F (55°C to 150°C)
- Mac Pro (2009-2010) - Installing Accelsior S into any open x4 or x16 PCIe 2.0 slot will deliver full throughput.
- Mac Pro (2008) - These models have two (2) PCIe 2.0 x16 slots, which enable Acceslsior S to deliver full throughput. Installing Accelsior S in of the two (2) PCIe 1.0 x4 slots will result in Accelsior S being addressed as a first generation one-lane card and will limit performance to 190-200MB/s real world data rates.
- Mac Pro (2006 - 2007) - These models have a PCIe 1.0 slot which cannot be configured to address Accelsior S as anything but as a first generation one-lane card, even with the Expansion Utility in OS X. As a result, Accelsior S performance will be limited to 190-200MB/s real world data rates. For maximum performance, we recommend installing a 2.5-inch OWC Mercury Electra 6G SSD in an open Mac Pro drive bay.
- PC - Use with a PCIe 2.0 x4 slot or better is recommended. Use with a PCIe 1.0 x4 slot will result in reduced performance.
Compatibility & Installation Videos
- Mac Pro (2009-2010) - Installing Accelsior S into any open x4 or x16 PCIe 2.0 slot will deliver full throughput.
- Mac Pro (2008) - These models have two (2) PCIe 2.0 x16 slots, which enable Acceslsior S to deliver full throughput. Installing Accelsior S in of the two (2) PCIe 1.0 x4 slots will result in Accelsior S being addressed as a first generation one-lane card and will limit performance to 190-200MB/s real world data rates.
- Mac Pro (2006 - 2007) - These models have a PCIe 1.0 slot which cannot be configured to address Accelsior S as anything but as a first generation one-lane card, even with the Expansion Utility in OS X. As a result, Accelsior S performance will be limited to 190-200MB/s real world data rates. For maximum performance, we recommend installing a 2.5-inch OWC Mercury Electra 6G SSD in an open Mac Pro drive bay.
- PC - Use with a PCIe 2.0 x4 slot or better is recommended. Use with a PCIe 1.0 x4 slot will result in reduced performance.
Mac Pro















PC Compatible

Videos
PCIe Card Install Video
Customer Reviews
Great easy to use product!
I would recommend this product to a friend!
- Reviewer:PeriwinkleLadybug-60034
Thank you so much for your fantastic review! We're thrilled to hear that our product is exactly what you needed and that you found it easy to use. Your satisfaction means the world to us, and we’re excited to continue providing you with great products! Keep enjoying your purchase!
This provides probably the fastest SSD reads/writes available on the cMP at a reasonable cost. NVMe would be faster - but at a significant cost increase (and a little more configuration headache).
I would recommend this product to a friend!
- Reviewer:dshep1964
Thank you so much for your awesome review! We're thrilled to hear that you're enjoying the speed and performance of your Mac Pro Classic Upgrade. It's fantastic that you found it to offer the best balance of performance and cost for your needs. Your feedback is invaluable and helps others make informed decisions. Keep enjoying those lightning-fast SSD reads and writes! Please feel free to contact us if you have any further questions, comments, or concerns. https://eshop.macsales.com/Service/
got what I needed at a great price
I would recommend this product to a friend!
- Reviewer:mitchglider
Thank you so much for your fantastic review! We're thrilled to hear that you found the PCIe drive you needed at a great price. It's always our goal to provide quality products that meet our customers' needs, and your feedback truly makes our day! Happy computing!