, researchers have turned PS2251-07 drives into "BadUSB" devices that can emulate a keyboard and inject malicious commands into a PC the moment they are plugged in.

: The USB drive may automatically disconnect every time you attempt to write data or flash firmware.

: Because these controllers can run hot, some users have noted that poor cooling or repeated heat cycles can lead to solder joint failures (cracked solder balls), which may require physical pressure on the chip to temporarily restore connection. Reverse Engineering USB: Need Help Identifying Components

When users type , they aren't exaggerating. Infrared thermography tests show the bare controller chip can reach 85°C to 95°C (185°F–203°F) under sustained write loads.