Acpi Ifx0102 ❲720p❳

So, ACPI IFX0102 = chip attached via the LPC bus and exposed through ACPI firmware. 2. What It Actually Is: TPM 1.2 The IFX0102 is a TPM (Trusted Platform Module) 1.2 device, typically the Infineon SLB 9635 TT 1.2 or similar.

If you’ve ever dug through Windows Device Manager on an older laptop (especially an Acer, Lenovo, or Sony Vaio from the late 2000s), you might have spotted a cryptic entry under “System devices”: ACPI IFX0102 It has no obvious driver, a generic Microsoft driver sometimes attaches itself, and it occasionally sits there with a yellow exclamation mark. Most people ignore it. But what is it? A phantom chip? A relic of a forgotten security standard? A backdoor?

Because on many systems (especially Acer, Gateway, eMachines, Packard Bell — all using similar InsydeH2O or Phoenix BIOSes), the TPM wasn’t directly enumerated by PCI or PNP. Instead, the BIOS’s ACPI namespace contained a device definition like: acpi ifx0102

dmesg | grep -i tpm ls /dev/tpm* sudo tpm_version If you see TPM 1.2, Infineon , that’s your IFX0102.

PNP0C31 is the official Plug-and-Play ID for a TPM. So IFX0102 is Infineon’s vendor-specific HID, while PNP0C31 is the generic class ID. So, ACPI IFX0102 = chip attached via the

Name (_HID, "IFX0102") Name (_CID, "PNP0C31") // TPM 1.2 Compatibility ID Name (_UID, 1) Method (_STA, 0, NotSerialized) Return (0x0F)

Reboot → Security tab → Look for “TPM Security” or “Security Chip” → Enable/Disable. Conclusion: A Fossil of the Trusted Computing Era The ACPI IFX0102 isn’t malware, a phantom device, or an error. It’s a 1.2 Trusted Platform Module from Infineon, buried in the ACPI tables of late-2000s laptops. For its time, it was cutting-edge — hardware root of trust for BitLocker and measured boot. Today, it’s a legacy component: too slow for modern security demands, vulnerable to ROCA if unpatched, and excluded from Windows 11 entirely. If you’ve ever dug through Windows Device Manager

Device (TPM)