Temperature Sensor OWC OWCDIDIMACHDD09

OWC In-Line Thermal Sensor (OWCDIDIMACHDD09) is a wired temperature sensor designed specifically for 2009–2010 iMac models to enable installation of third-party SATA drives while preserving proper fan control and system diagnostics. The plug-and-play cable provides a hardware digital thermal sensor interface to the iMac's System Management Controller, avoiding software hacks and maintaining compatibility with Apple's built-in diagnostics.

Advantages

This in-line digital thermal sensor eliminates erroneous fan behavior by supplying accurate drive temperature data to the iMac, allowing third-party HDDs or SSDs to be installed without disrupting fan speed control. The device is easy to install as part of an OWC Internal HDD DIY Kit (sold separately) and supports large-capacity drives up to 8.0 TB or high-speed SSDs when used with the appropriate adapter, while keeping original diagnostic functionality intact.

Suitable for

• 2009–2010 iMac users upgrading or replacing internal SATA hard drives
• Users installing third-party HDDs up to 8.0 TB
• Users installing SSDs via a NewerTech AdaptaDrive or similar adapter
• Technicians performing DIY internal drive upgrades while retaining system fan control

Key specifications

• Manufacturer: OWC
• Model / MPN: OWCDIDIMACHDD09
• Compatibility: iMac (2009–2010 models)
• Function: In-line digital thermal sensor for SATA drives
• Supports: Third-party HDDs (up to 8.0 TB) and SSDs with appropriate adapter
• Interface: Wired plug-and-play cable to the iMac System Management Controller
• EAN: 812437021110

How to use

Use the OWC In-Line Thermal Sensor when replacing the iMac's original internal drive. Install the sensor as part of an OWC Internal HDD DIY Kit (sold separately) following the machine-specific OWC install video in full before beginning. Connect the sensor cable to the iMac's thermal header as shown in the instructions, install the replacement HDD or SSD (with an adapter if required), and reassemble the iMac. The sensor provides temperature data directly to the System Management Controller, restoring correct fan control and allowing Apple's diagnostics to function normally.

Recommendations

Watch the OWC install video for your specific iMac model in its entirety before attempting installation. If you are not confident performing this complex upgrade yourself, consider having OWC's certified technicians perform the upgrade to ensure proper installation and system operation.