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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

  • Device TypeInternal / External Solid State Drive (SSD)
  • Used ForConsumer
  • Capacity240GB
  • Memory ComponentsMLC
  • InterfaceUSB 3.0 / SATA 6Gb/s
  • Max Sequential ReadUp to 495 MBps
  • 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.

Highlights

  • 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

Specifications

BrandTranscend
SeriesJetDrive 500
ModelTS240GJDM500
Device TypeInternal / External Solid State Drive (SSD)
Used ForConsumer
Capacity240GB
Memory ComponentsMLC
InterfaceUSB 3.0 / SATA 6Gb/s
Max Sequential ReadUp to 495 MBps
Max Sequential WriteUp to 427 MBps
Operating Temperature0°C ~ +70°C
Height10.8mm
Width28.2mm
Depth130.0mm
Weight60g
Shipping weight0.24 kg
Package size170 × 95 × 58 mm

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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