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Silicon Power A55 256GB M.2 2280 SATA III Internal SSD

Silicon Power A55 256GB M.2 2280 SATA III Internal SSD

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$49.00at Best BuyObserved Nov 3, 2026, 7:22 AM

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Our take on the Silicon Power A55 256GB M.2 2280 SATA III Internal SSD

The Silicon Power A55 is a 256GB M.2 2280 SATA III internal SSD rated for up to 560 MB/s read and 530 MB/s write. It fits laptops and desktops with an M.2 slot that supports SATA, not NVMe, so check your slot type before buying. Its only listed new price is $49.00 at Best Buy as of November 3, 2026, which matches its short recorded range of $49.00 since November 2, 2026.

Best forReviving an older laptop with a SATA M.2 slotA cheap boot drive for a basic desktopSecondary storage for documents and mediaBudget builds where NVMe speed is not needed
Pros
  • Sequential speeds near the SATA III ceiling (560/530 MB/s)
  • M.2 2280 shape fits many slim laptops and desktops
  • 256GB is enough for an OS and everyday apps
  • Single-sided, low-profile design eases installation
Cons
  • SATA interface, far slower than NVMe drives
  • Only 1-year parts warranty, short for an SSD
  • 256GB fills quickly with games and video
  • No DRAM cache, so sustained writes can slow

Silicon Power A55 256GB M.2 2280 SATA III Internal SSD prices at every store

  • Best BuyNew

    In stock

    $49.00Observed Nov 3, 2026, 7:22 AM
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Silicon Power A55 256GB M.2 2280 SATA III Internal SSD price history

$49.00$49.00
Nov 2Nov 3

Lowest price we've seen: $49.00 on Nov 2 at Best Buy. Tracked across 1 store since Nov 2.

What reviewers say

Owner feedback on the A55 line is generally positive for budget upgrades, with buyers citing easy installation and a clear speed jump over hard drives. Complaints tend to focus on sustained write speed and the short warranty rather than reliability.

Pros
  • Noticeable boot and app-load speedup over a hard drive
  • Simple install in compatible M.2 slots
  • Low price for the capacity
Cons
  • Write speed drops on large transfers
  • Short warranty compared with other SSD brands
  • Some buyers order it for NVMe-only slots and find it does not fit

Specifications

Storage Capacity
256 gigabytes
Storage Drive Type
SSD
Maximum Read Speed
560 megabytes per second
Maximum Write Speed
530 megabytes per second
Form Factor
M.2 2280
Interface(S)
SATA
Internal Or External
Internal
Product Compatibility
Laptop computers, Desktop computers
Product Width
0.9 inches
Warranty - Parts
1 year

Questions and answers

Is this drive worth it at $49?
At $49.00 at Best Buy as of November 3, 2026, it is a fair price for a 256GB SATA M.2 drive, but NVMe drives of the same capacity often cost similar and run much faster. Buy it only if your slot is SATA-only.
Will it work in my laptop?
Only if your laptop has an M.2 2280 slot that supports SATA. Many modern laptops use NVMe-only M.2 slots, where this drive will not be recognized.
How fast is it compared with an NVMe SSD?
It tops out around 560 MB/s read and 530 MB/s write, the limit of SATA III. A typical NVMe drive reaches several times that, so this is a budget upgrade, not a performance part.
What comes in the box?
The drive itself. You may need a mounting screw if your system does not already have one, and there is no cloning software or cable included.
Is 256GB enough?
It is fine for an operating system, office apps and photos. Games and video projects will fill it quickly, so plan on a second drive for large files.
When is it cheapest?
Its recorded low is $49.00, set on November 2, 2026, and it has not moved since. Watch for SSD sales around Black Friday and back-to-school periods for possible drops.
Where is the Silicon Power A55 256GB M.2 2280 SATA III Internal SSD cheapest?
At Best Buy, for $49.00, as of our latest check.

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