Could I use this with an ASUS 970 PRO GAMING/AURA and a WDS100T2B0B WD Blue 3D NAND 1TB SATA III M.2 2280 Solid State Drive to make the M.2 SSD a Bootable Drive?

the m2 drive not being a bootable drive is usually a bios setting or incompatability. the adapter will usually not affect this. you can try checking for a compatability setting or legacy setting in the bios

Will two drives attached to this adapter both be available to be formed into a RAID array provided by the motherboard's built-in Intel RAID controller?

It is my intent to set up my adapter for RAID also, but I have not yet tried it. Each of two SATA SSD's connects to an independent SATA socket so I expect them both to be eligible for a RAID configuration with an external RAID controller. The PCIe bus only supplies power for the two SATA drives. It is very unlikely that the third NVMe SSD can participate in a RAID configuration, as it connects only through the PCIe bus.

What is the maximum bandwidth available for M.2 PCIe drives when using this adapter?

The maximum bandwidth available for M.2 PCIe drives is up to approximately 40Gbps.

What types of M.2 SSDs can I mount using the StarTech.com PEXM2SAT32N1 adapter?

You can mount both PCIe (NVMe) and SATA based M.2 SSDs using the StarTech.com PEXM2SAT32N1 adapter.

SanDisk Optimus GX PRO 850X M.2 2280-S3-M 1TB PCI-Express 4.0 x4 3D NAND TLC Internal Solid State Drive (SSD) SDSP81100TAN-000E0

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StarTech.com PEXM2SAT32N1 M.2 Adapter - 3 Port - 1 x PCIe (NVMe) M.2 - 2 x SATA III M.2 - SSD PCIE M.2 Adapter - M2 SSD - PCI Express SSD

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Mount both PCIe (NVMe) and SATA based M.2 SSDs inside your computer using this PCI Express adapter card
3 Port M.2 SSD (NGFF) Adapter Card / 1 x PCIe (NVMe) M.2 / 2 x SATA III M.2 / PCIe 3.0
PCI Express 3.0 M.2 NGFF Card
Easily expand the storage and improve the overall performance of your desktop or server
Supports PCI Express 3.0 (x4) ideal for a high-performance M.2 PCIe SSD (NVMe)
OS independent with no drivers required for a fast hassle-free set up
Includes a low-profile bracket

Overview

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PCI EXPRESS 3.0 M. 2 NGFF CARD

Best Seller Ranking	#52 in Hard Drive Adapters

Model
Brand	StarTech.com
Model	PEXM2SAT32N1

Details
Color	Black
Cable Length	No
Specifications	Mount both PCIe (NVMe) and SATA based M.2 SSDs inside your computer using this PCI Express adapter card 3 Port M.2 SSD (NGFF) Adapter Card / 1 x PCIe (NVMe) M.2 / 2 x SATA III M.2 / PCIe 3.0 PCI Express 3.0 M.2 NGFF Card Easily expand the storage and improve the overall performance of your desktop or server Supports PCI Express 3.0 (x4) ideal for a high-performance M.2 PCIe SSD (NVMe) OS independent with no drivers required for a fast hassle-free set up Includes a low-profile bracket

Connectors
Connector A	Connector Type(s): 1 x PCI Express x4 Male
Connector B	Internal Ports: 3 x M.2 (NGFF, B-Key) Receptacle / 2 x SATA (7 pin; Data) Plug

Features
Features	Expand the storage and improve the performance of your computer, with slots for two M.2 SATA SSDs and one M.2 PCIe SSD Supports PCI Express 3.0 (x4), ideal for a high-performance M.2 PCIe SSD (NVMe) SATA slots feature a passthrough design, so your drives can connect to the SATA ports on your host PC Full bandwidth is available for each M.2 drive simultaneously (up to approximately 40Gbps for M.2 PCIe drives, and up to 6Gbps for M.2 SATA III drives) Wide installation compatibility, with support for a range of M.2 drives (2280, 2260, 2242, 2230) Adjustable stand-offs and multiple mounting holes support 80 mm, 60 mm, 42 mm, and 30 mm SSDs OS independent with no drivers required, for a fast, hassle-free setup Equipped with a full-profile bracket, includes a low-profile (half-height bracket) for installation in small form-factor computers Installs into x4, x8, or x16 PCIe slots

Dimensions & Weight
Dimensions	4.70" x 0.80" x 3.90"
Weight	3.50 oz.

Package Contents
Package Contents	1 x 3-port M.2 NGFF SSD adapter card 1 x low-profile bracket 3 x M.2 mounting screws 3 x M.2 mounting standoffs 3 x M.2 mounting nuts 1 x screwdriver 1 x quick-start guide

Additional Information
First Listed on Newegg	September 17, 2025

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