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Yes. A PC can use a conventional 2.5-inch SATA SSD and an NVMe SSD at the same time when the motherboard provides both an available SATA connection and an M.2 slot that supports PCIe/NVMe. The 2.5-inch drive uses a SATA data cable plus SATA power from the power supply; the NVMe drive installs directly into the compatible M.2 slot.
Compatibility is not automatic, however. M.2 describes a connector and physical format, not the storage protocol, and some motherboards disable particular SATA ports when specific M.2 slots are occupied. Check your exact motherboard manual before installing either drive.
What has to be true for both drives to work
The motherboard determines whether the combination is possible. You need two electrically compatible paths:
- An available SATA port and a SATA power lead for the 2.5-inch SATA SSD.
- An M.2 slot that accepts PCIe/NVMe storage for the NVMe SSD.
Most desktop boards that advertise both interfaces can run one drive on each, but the connector count alone is not enough. The manual may limit which M.2 lengths fit, identify slots that support only SATA or only PCIe drives, or document shared resources that make one SATA port unavailable when an M.2 slot is populated.
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Read the motherboard’s storage specifications and connector table before buying or moving a drive. MSI’s installation guidance explains the distinction between M.2 PCIe and M.2 SATA drives and the physical installation process: MSI, “How to Install/Update SSD onto Motherboard?” (May 7, 2024).
SATA, M.2 and NVMe are different terms
SATA SSD
A conventional SATA SSD is usually a 2.5-inch drive. It communicates through the SATA interface and has two separate connections: a narrow SATA data connector leading to the motherboard and a wider SATA power connector from the power supply. Missing either connection prevents normal operation.
M.2 SSD
M.2 identifies a compact card shape and its edge connector. It does not, by itself, tell you how the drive communicates. An M.2 card can use the SATA protocol or PCIe, so an “M.2 SSD” is not automatically an NVMe drive.
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NVMe SSD
NVMe is the storage protocol normally used by PCIe-based M.2 drives. The slot must provide PCIe/NVMe support; an M.2 slot designed only for SATA cannot operate an NVMe drive. MSI explicitly describes M.2 devices as either “M.2 PCIe” or “M.2 SATA,” while its support material notes that PCIe models offer higher bandwidth and lower transfer latency than M.2 SATA models. That is an interface-level comparison, not a promise that every application will feel proportionally faster.
Check the motherboard before you install anything
Use the exact model number of your motherboard, then inspect its storage section and connector diagram. Confirm each item below:
- NVMe capability: Verify that at least one M.2 slot accepts PCIe/NVMe drives. Do not infer this from the slot’s M.2 label alone.
- Physical length: Check which M.2 card lengths the slot supports. The drive must match the board’s standoff and mounting position.
- SATA availability: Make sure a SATA port remains free for the 2.5-inch drive and that the power supply has a SATA power connector available.
- Resource sharing: Look for notes stating that an M.2 slot shares lanes or channels with SATA ports or PCIe slots.
- Port numbering: If sharing is documented, identify the SATA port that remains usable rather than choosing one at random.
Board manuals often place these details in a table titled Storage, M.2, SATA, or Connector Information. The wording matters: “supports M.2” is incomplete unless the manual specifies whether that slot accepts SATA, PCIe/NVMe, or both.
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Why an M.2 drive can disable a SATA port
Some motherboards wire an M.2 socket and one or more SATA connectors to shared chipset resources. When the M.2 socket is occupied, the board may turn off the linked SATA connector. MSI describes this limitation directly: “Some M.2 slots share channels with SATA interfaces, which means you cannot use the shared slots or interfaces simultaneously.”
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The exact mapping is board-specific. For example, MSI’s Z590 ACE documentation states that SATA2 is unavailable when M2_2 is occupied, and SATA5/SATA6 are unavailable when M2_3 is occupied. That example illustrates the type of limitation to look for; it is not a rule for every Z590 board or every motherboard family.
GIGABYTE’s B560M D3H manual likewise lists board-specific M.2 and SATA connector notices: B560M D3H motherboard manual. If your SATA SSD disappears after adding an NVMe drive, move its data cable to a port the manual identifies as independent, provided that port is physically available.
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How to install the two drives
Prepare safely
- Shut down the PC completely and switch off the power supply if it has a rear switch.
- Disconnect the AC power cable and press the case power button briefly to discharge residual power.
- Work on a non-carpeted surface and avoid touching the gold contacts on either drive.
- Have a SATA data cable available if the 2.5-inch drive did not include one. SATA power must come from the PC power supply.
Install the 2.5-inch SATA SSD
- Mount the drive in a compatible 2.5-inch tray or bracket so it cannot move inside the case.
- Connect one end of the SATA data cable to the drive and the other end to a SATA motherboard port that the manual says remains active with your selected M.2 slot.
- Attach a SATA power plug from the power supply to the drive. The data cable alone does not provide power.
- Route the cables so they do not press against fans or prevent the case panel from closing.
Install the M.2 NVMe SSD
- Locate an M.2 socket whose specifications include PCIe/NVMe support and the drive’s length.
- Remove the small retaining screw or heatsink cover according to the motherboard manual.
- Insert the M.2 card into the socket at the angle shown in the manual. MSI’s general procedure calls for inserting a supported drive at an angle, then lowering and securing it with the correct mounting screw.
- Replace any M.2 heatsink only after the drive is flat and firmly secured. Do not force the card or tighten the screw against an incorrect standoff.
Reconnect the case, power on, and check whether both devices are detected. If one is missing, turn the system off before changing cables or slot placement.
What to expect from the two interfaces
| Drive type | Typical physical format | Motherboard connection | Power connection | Key compatibility check |
|---|---|---|---|---|
| 2.5-inch SATA SSD | 2.5-inch drive enclosure | SATA data port | Separate SATA power lead from the PSU | Active SATA port and available PSU plug |
| M.2 SATA SSD | M.2 card | M.2 slot with SATA support | Delivered through the M.2 socket | Slot must support M.2 SATA; may share resources |
| M.2 NVMe SSD | M.2 card | M.2 slot with PCIe/NVMe support | Delivered through the M.2 socket | PCIe/NVMe support, correct length, and sharing notes |
MSI characterizes M.2 PCIe drives as having greater bandwidth and lower transfer latency than M.2 SATA drives. That difference describes the interfaces. The speed you experience still depends on the particular SSD, the motherboard’s PCIe generation and implementation, and the workload, so interface terminology should not be treated as a guaranteed application-level percentage improvement.
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Once the motherboard and operating system recognize both devices, they can coexist as separate storage volumes. A common arrangement is to place the operating system or frequently accessed applications on one drive and use the other for projects, games, media, backups, or a second operating-system installation. The correct arrangement depends on capacity, backup habits, and which workloads benefit from the lower latency of the NVMe interface.
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Do not erase or format an existing SATA SSD merely because an NVMe drive has been added. If the SATA drive contains data, verify that the system identifies the intended device before making partition or formatting changes. Drive names and capacities are safer identifiers than physical position alone, especially after adding a second disk.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Troubleshooting when one drive is missing
The NVMe SSD is not detected
- Confirm that the M.2 socket supports PCIe/NVMe rather than only M.2 SATA.
- Check that the card is fully inserted at the correct angle and held down by the proper screw.
- Verify that the drive length matches the slot’s supported mounting positions.
- Review the manual for a slot-sharing note or a restriction tied to another expansion slot.
The SATA SSD disappears after adding NVMe
- Read the motherboard’s M.2/SATA sharing table and identify which SATA connector is disabled by the occupied slot.
- Move the SATA data cable to an unaffected SATA port.
- Check that the SATA power plug has not been loosened while installing the M.2 card.
- Confirm that the SATA cable is seated at both ends and is not connected to a port disabled by the board’s resource map.
Neither drive appears after cabling changes
- Power the system down before reseating hardware.
- Return to the manual’s connector diagram and verify every cable and slot assignment.
- Test one change at a time so you know whether the problem follows the cable, the port, or the drive.
- If the board’s storage-detection guidance specifies a different supported connector arrangement, follow that board-specific procedure rather than assuming all SATA ports behave alike. See MSI’s storage-detection troubleshooting guide.
Choosing which drive to buy
Start with compatibility, not the advertised speed on a product box. A fast NVMe SSD is unusable in an M.2 slot that lacks PCIe/NVMe support, while a SATA SSD still needs both a free data port and a SATA power lead. After confirming the connections, compare the capacity you need, the price available for your region and date, and the performance your workload can actually use.
- Choose a 2.5-inch SATA SSD when your board has spare SATA capacity, you need an inexpensive way to add storage, or the available M.2 slots are already occupied.
- Choose an M.2 NVMe SSD when your board explicitly supports PCIe/NVMe and your workload can benefit from its higher interface bandwidth and lower transfer latency.
- Use both when you want additional capacity without replacing an existing drive, or when your board’s slot and port map leaves both interfaces active.
Retail prices and model performance change frequently, and the cited motherboard documentation does not establish a universal price or benchmark for any specific SSD. Treat individual product claims as model-specific rather than as a property of every SATA or NVMe drive.
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Compatibility checklist
- Motherboard model and revision identified.
- M.2 slot explicitly supports PCIe/NVMe.
- NVMe card length matches the available standoff.
- At least one SATA port remains enabled with that M.2 slot populated.
- 2.5-inch SATA SSD has a SATA data cable.
- Power supply has an available SATA power connector.
- M.2 card is mounted at the correct angle and secured.
- Both drives are detected before any formatting or partition changes.
If every item is satisfied, a SATA SSD and an NVMe SSD can operate in the same PC without requiring that one drive replace the other.
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