Windows TBS sends a caller’s TPM command buffer to the TPM and returns a result buffer, but success has two layers: Tbsip_Submit_Command can succeed while the TPM command itself returns an error. Create a context with Tbsi_Context_Create, submit the command, check the TBS return code, and then interpret the TPM response using the specification for that TPM generation and command.
Choose TBS when you need raw TPM access
TPM Base Services (TBS) is the Windows service/API that centralizes TPM access across applications and cooperatively schedules requests using caller priorities. Microsoft recommends higher-level Key Storage APIs for targeted key-storage operations; use TBS when your task requires submitting TPM command buffers directly. See Microsoft’s TPM Base Services overview.
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Create a context for the TPM generation you support
Call Tbsi_Context_Create to obtain a TBS context handle, which you pass to later TBS calls. The context parameters indicate which TPM generation your application supports. For TPM 2.0, configure TBS_CONTEXT_PARAMS2 with version set to TPM_VERSION_20 and includeTpm20 set to 1. If the application should also support TPM 1.2, set includeTpm12 as well. Consult the TBS_CONTEXT_PARAMS2 reference and Tbsi_Context_Create reference for the documented structure and call details.
Context creation can fail, including because parameters are invalid, the TBS service is disabled or stopped, too many contexts are open, or no compatible TPM is available. Handle the returned TBS code rather than assuming a usable context was created.
#1 Best Overall
- Compatible with TPM-M R2.0
- Chipset: Infineon SLB9665
- PIN DEFINE:14Pin
- Interface:LPC
- Please check the Pinout of mainboard at the official website and make sure it compatible with the pinout of TPM module before purchasing, thank you.
Submit the command buffer
Tbsip_Submit_Command accepts the context, a command buffer and its byte count, a locality, a priority, and a result buffer with an in/out size. In pcbResult, provide the output buffer capacity before the call; on return it indicates the result length, or the required size if that buffer was too small. Microsoft also documents that the input and output buffers may be the same buffer. The function reference is at Tbsip_Submit_Command.
pabCommandandcbCommandidentify the submitted bytes and their length.pabResultpoints to the result buffer.pcbResultsupplies its capacity and receives the returned or required size.- Locality and priority are explicit call parameters. Microsoft documents locality zero as the only currently supported locality. Priorities include low, normal, high, system, and max.
The documented development files are tbs.h, Tbs.lib, and Tbs.dll. The function reference lists desktop support beginning with Windows Vista and Windows Server 2008; check the current requirements for your specific Windows target.
Rank #2
- TPM 2.0 module for Asus motherboard.
- TPM 2.0 module chip 2.0mm pitch, 2x7P, 14 pin security module
- LPC 14 Pin for AsusTPM chip is better compatible with DDR4 memory module of motherboard, built in support memory type higher than DDR3! Supported states may vary by motherboard specification.
- Note: Don't support laptops and motherboards prior to X99; Don't support DDR3 memory.
- Packing list:1x TPM 2.0 Module for ASUS
Check the TBS result and TPM response separately
First inspect the function’s TBS_RESULT. A failed TBS call returns a TBS error code: the Windows API operation did not complete successfully. If the call returns TBS_SUCCESS, inspect the result buffer as well. It contains the TPM command result and can hold a standard TPM error, so API success does not establish that the TPM command succeeded.
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- TBS failure: handle the returned TBS code as an API or submission/processing failure.
- TBS success with a TPM error: the request reached the response stage, but the TPM reported an error in its response. Decode that response under the applicable TPM command definition.
- TBS success with a successful TPM response: interpret the remaining response fields under that same command definition.
Use the TPM specification to decode response bytes
The TBS call documentation explains the result buffer’s role and error distinction; it does not define a general response header layout, byte order, response-tag rules, or command-specific payload schema. Do not infer byte offsets from the TBS function signature. Identify the TPM generation and command you submitted, then use the corresponding normative TPM specification and command definition to parse the response. Without that definition, a byte-level decoder would be guesswork.
Rank #3
- TPM 2.0 module for ASROCK motherboard.
- TPM 2.0 module chip 2.0mm pitch, 2x9P, 18 pin security module for ASROCK
- LPC 18 Pin for TPM chip is better compatible with DDR4 memory module of motherboard, built in support memory type higher than DDR3! Supported states may vary by motherboard specification.
- Note: Don't support laptops and motherboards prior to X99; Don't support DDR3 memory.
- Packing list:1x TPM 2.0 Module for ASROCK
Close the context when finished
Use Tbsip_Context_Close to close the context and release its associated resources and binding handle. Microsoft lists this function in the TBS header reference.
Quick Recap
Best Value
- TPM modules are suitable for GIGABYTE for Windows 11 motherboards.
- Some motherboards require a TPM module inserted or an update to the latest BIOS to enable the TPM option.
- 12Pin Remote Card Encryption Security Module Is Easy To Use, No Complicated Procedures Are Required, And It Can Be Used Immediately After Installation.
- Interface: LPC
- Packing list:1x TPM 2.0 Module for GIGABYTE
Rank #4
- Compatible with ASUS motherboards with 20-1 pin TPM header; Please check your motherboard manual to confirm the presence of a 20-1pin TPM header before purchasing. Not compatible with ASUS X570-P or other models with other TPM header
- TPM 2.0 module 2.54mm pitch, 2x10P, 20-1 pin security module
- LPC 20-1Pin for AsusTPM chip is better compatible with DDR4 memory module of motherboard, built in support memory type higher than DDR3! Supported states may vary by motherboard specification.
- Note: Don't support laptops and motherboards prior to X99; Don't support DDR3 memory.If you are unsure whether your motherboard is compatible with our TPM module, please verify with us before making a purchase. Thank you.
- Packing list:1x TPM 2.0 Module for ASUS (Doesn't fit the connector on a ASUS Prime X570-P motherboard)
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