Alcor Micro Unknown | Fa00 Fw Fa04 Hot

A failing capacitor or cracked NAND die can cause the controller to draw excessive current ( >500mA on USB 2.0), triggering host-side overcurrent protection and a "hot" status.

| Symptom | Likely fix | |----------------------------------------|-------------------------------------------| | Unknown, cool, no card inserted | Normal – insert card | | Unknown, cool, with card inserted | Driver or reformat card (FAT32/exFAT) | | Unknown, hot, with/without card | Hardware failure – replace device | | Shows as FA00 in Linux, no storage | Firmware corruption – needs MPtool (risky)|

Common causes:

Run lsusb and dmesg -w.
If you see ID 058f:fa00 Alcor Micro Corp., try:

sudo modprobe usb-storage
echo "058f fa00" | sudo tee /sys/bus/usb/drivers/usb-storage/new_id

Some older Alcor readers need uas blacklisted. alcor micro unknown fa00 fw fa04 hot

Field reports indicate that FW FA04 has a known bug: after several unsafe ejections or power loss events, the controller's internal temperature sensor locks to a maximum value (e.g., 0xFF). The driver interprets this as "hot," even if the drive is physically cold.

This is the Device ID (Hardware ID). For Alcor Micro, different numbers represent different functions: A failing capacitor or cracked NAND die can

If Windows still calls it "FA00 Hot," you must override the driver.

Note: You may lose the ability to read obscure formats like xD cards, but SD and SDHC will work. Common causes: