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Rectangular silver metal SSD with rounded edges, 130mm long, 28mm wide, 10.8mm thick

Transcend

Transcend JetDrive 500 TS240GJDM500 240GB internal SSD

SKU CH-SYEZ-QJB9B MPN TS240GJDM500

A 240 GB MLC solid-state drive with USB 3.0 and SATA 6Gb/s interfaces, reaching 495 MBps read and 427 MBps write speeds

  • Total capacity240 GB
  • Sequential read speedUp to 495 MB/s
  • Sequential write speedUp to 427 MB/s
  • Interface typeUSB 3.0 / SATA 6Gb/s
  • Product typeInternal / External Solid State Drive (SSD)
  • Intended useConsumer
  • Up to 495 MBps sequential read speed
  • Up to 427 MBps sequential write speed
  • MLC memory for reliable endurance
  • USB 3.0 and SATA 6Gb/s dual interface
  • Compact 10.8 mm height fits tight bays

Upgrade Kit for MacBook Air and Pro

The Transcend JetDrive 500 TS240GJDM500 is a 240GB internal SSD designed as an upgrade kit for MacBook Air and MacBook Pro with Retina display. It uses MLC flash memory and connects through a SATA 6Gb/s interface. The package includes tools, instructions and an aluminum USB 3.0 enclosure to repurpose the original drive as external storage.

Thermals Noise and Power in Normal Use

The drive operates within a 0°C to 70°C range without active cooling, so it runs silently in the confined space of a notebook. As a solid-state device with no moving parts, it draws minimal power from the SATA bus, helping preserve battery life during everyday workloads. Sequential reads reach up to 495 MBps and writes up to 427 MBps under typical conditions.

Build Integration and What It Frees Up

The 10.8mm height fits the standard drive bay in compatible MacBooks, while the USB 3.0 enclosure lets the replaced SSD serve as a portable 240GB backup or transfer drive. No extra cabling or power adapters are required beyond the supplied enclosure. The upgrade adds capacity up to 960GB across the JetDrive 500, 520 and 720 series and reclaims the original storage for external use.

How it compares

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

Price $127.99
Cheaper than about 64% of the 1,994 comparable items (median $180.49).
Total capacity 240 GB
Lower than about 90% of the 1,368 comparable items (median 1 TB).
Sequential read speed Up to 495 MB/s
Lower than about 91% of the 1,180 comparable items (median 2,400 MB/s).
Price per TB $533.29 per TB
Pricier than about 88% of the 1,362 comparable items (median $165.50 per TB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameTranscend
Product lineJetDrive 500
Model nameTS240GJDM500
Total capacity240 GB
Product typeInternal / External Solid State Drive (SSD)
Intended useConsumer
Performance
Sequential read speedUp to 495 MB/s
Sequential write speedUp to 427 MB/s
Storage
NAND flash typeMLC
Ports & slots
Interface typeUSB 3.0 / SATA 6Gb/s
Size & build
Overall height10.8 mm
Overall width28.2 mm
Product depth130.0 mm
Product weight60g
Shipping weight0.24 kg
Package size170 × 95 × 58 mm
Environment & compliance
Operating temperature range0 °C to 70 °C

Questions about this item

How do I install the JetDrive 500 TS240GJDM500 and what step do people often miss?

Connect the drive via the SATA 6Gb/s interface inside the MacBook, then use the included aluminum USB 3.0 enclosure to migrate data from the original SSD before swapping; the step often missed is completing that migration before removing the old drive.

What maintenance or replacement will the 240GB MLC drive need later?

The MLC NAND and SATA controller have no scheduled maintenance; monitor SMART health attributes and replace the drive only if wear indicators approach their limits or errors appear.

What limit appears first under sustained heavy writes on this 240GB model?

Sequential write speed caps at 427 MBps and the controller will throttle once the operating temperature reaches 70°C, so sustained workloads hit the thermal limit before the interface saturates.

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