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Axiom

Axiom SSD2558X500-AX 2.5" SATA internal SSD

SKU CH-WQRT-06AMT MPN SSD2558X500-AX

A 2.5" SATA internal SSD delivering 500 MB/s reads and 400 MB/s writes with a built-in temperature sensor

  • Sequential read speed500 MB/s
  • Sequential write speed400 MB/s
  • Interface typeSATA III
  • Form factor2.5 in (6.35 cm)
  • Product typeInternal
  • Intended useTemperature Sensor
  • Faster boot and load times with 500 MB/s sequential read
  • Steady 400 MB/s sustained write keeps large transfers consistent
  • Low 2.10 W active draw extends laptop battery life
  • Built-in temperature sensor and S.M.A.R.T. monitoring protect data health
  • 5 inch SATA III design fits standard laptop and desktop bays

Axiom C550n 500 GB SATA SSD

The Axiom C550n is a 2.5 inch internal solid state drive built for PCs, ultrabooks and embedded systems that need reliable SATA storage. It uses a Silicon Motion SM2258 controller with 3D TLC NAND to deliver consistent performance for mixed workloads. TRIM, wear levelling, static data refresh and LDPC ECC protect data integrity across the drive lifespan. S.M.A.R.T. monitoring and a built-in temperature sensor help track health in real time.

2.5 inch form factor with SATA III connector

The drive measures 3.94 by 2.76 by 0.28 inches and fits standard 2.5 inch drive bays using a native SATA connector. Active power draw is 2.10 watts and DevSleep support reduces consumption further during idle periods. No moving parts mean silent operation and resistance to shock or vibration. The SATA III interface works in both SATA and SAS environments without extra adapters. SLC caching boosts burst read and write speeds for everyday tasks.

Upgrade from mechanical hard drives

Replacing a traditional spinning disk with this 3D TLC SSD typically improves system startup, application loading and backup times. Sustained sequential reads reach 400 MB/s and writes hold at 400 MB/s, while maximum sequential reads hit 500 MB/s and writes 400 MB/s. The jump is worth it when faster boot and responsiveness matter more than raw capacity. Compatibility spans any operating system that supports the SATA protocol.

How it compares

Measured against everything we stock in Internal NVMe & SATA SSDs, at today’s prices. Recalculated every night.

Price $76.99
Cheaper than about 80% of the 1,994 comparable items (median $180.49).
Sequential read speed 500 MB/s
Lower than about 90% of the 1,180 comparable items (median 2,400 MB/s).
Sequential write speed 400 MB/s
Lower than about 91% of the 1,184 comparable items (median 1,700 MB/s).

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Specifications

Product
Brand nameAxiom
Product lineC550n
Model nameSSD2558 × 500-AX
Part numberSSD2558 × 500-AX
Product typeInternal
Intended useTemperature Sensor
Performance
Sequential read speed500 MB/s
Sequential write speed400 MB/s
Sustained sequential read rate400 MB/s
Sustained sequential write rate400 MB/s
Storage
Controller chipAxiom
Cache memory500 GB
Connectivity
Connection protocolSATA
Ports & slots
Interface typeSATA III
ConnectionSATA
Power
Active power draw2.1 W
Size & build
Form factor2.5 in (6.35 cm)
Product depth3.94 in x 2.76 in x 0.28 in
Shipping weight0.23 kg
Package size102 × 76 × 13 mm

Questions about this item

What real-world speed does the SATA 600 interface cap at for this drive?

The SATA 600 interface limits the C550n to a maximum sequential read of 500 MB/s and a sustained write of 400 MB/s in practice.

What are the exact dimensions I need to clear for a 2.5 inch bay?

The drive measures 3.94 in deep, 2.76 in wide and 0.28 in high, matching the standard 2.5 inch form factor.

Which step is often missed when installing this SATA SSD in a laptop?

After securing the drive in the caddy, you must connect both the SATA data cable and the SATA power connector, then enable AHCI in the BIOS for full performance.

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