This is the section for enthusiasts. To permanently solve the "Phison PS2251-07 hot" problem, you must modify the hardware.
It is normal. The PS2251-07 is designed to operate at high temperatures. However, "normal" does not mean "comfortable."
Place a standard pencil eraser on top of the controller chip (requires opening the casing). The rubber absorbs heat briefly. Note: This is a band-aid, not a cure.
In the world of consumer tech, we spend a lot of time talking about processors, screens, and cloud storage. We rarely talk about the unsung heroes: the tiny microcontrollers inside the devices we use every day. phison ps225107ps2307 hot
One such hero is the Phison PS2251-07 (also known as the PS2307). You have probably used one today without knowing it. Found in countless USB 3.0 flash drives from brands like Corsair, Kingston, and Patriot, this small chip is quietly shaping how we move, watch, and play.
Here is how this humble controller bridges the gap between practical lifestyle management and on-the-go entertainment.
This is why the PS2307 is famous. In the hardware community, "Hot" often refers to how hackable a device is. The PS2307 is arguably the most accessible controller for BadUSB attacks. This is the section for enthusiasts
If you are in the middle of a backup and your PS2307 drive is on fire, do this immediately:
Before solving the heat issue, we must understand the hardware.
The Phison PS2251-07 (often labeled on the chip as "PS2307") is a USB 3.0 to NAND flash controller. It is a single-chip solution designed for high-speed external storage. Launched in the mid-2010s, it became infamous for its aggressive performance tuning. The problem
Key specs:
The problem? To achieve 150-200 MB/s reads on cheap TLC flash, Phison overclocked this controller aggressively from the factory. It has no active cooling (no fan, no heatsink) and relies entirely on the plastic USB casing to dissipate heat. Consequently, the PS2251-07 is one of the hottest-running USB controllers in existence.
Use CrystalDiskInfo or Phison’s unofficial "Phison Flash Drive Tool" to read the SMART data. If the temperature delta exceeds 50°C, stop writing and wait 10 minutes.