Thinkpad T400: Unknown Device After Installing XP
After installing Windows XP Pro SP3 on a new Lenovo T400 ThinkPad, ones found that he’s got some unknown devices. The Base System device under the other device at device manager shown yellow mark, which means there is unknown device installed on the XP system.
To make some unknown devices recognizing by the XP on the ThinkPad T400, you need to install the right device drivers on it. There are some drivers below you can get to recognize the Base System Device, PCI Serial Port and Unknown Device in your T400 laptop.
- PCI Simple Communications Controller:
Management Engine Interface (Intel AMT 4.0) driver:
Download Intel AMT 4.0 Management Engine Interface
- PCI Serial Port:
Local Manageability Service and Serial Over LAN (Intel AMT 4.0) driver for Windows Vista, XP
Download Intel AMT 4.0 – LMS and SOL Driver
- Base System Device:
Ricoh Multi Card Reader Driver for Windows Vista, XP
Download Ricoh 4-in-1 Card Reader Driver
- Unknown Device:
Intel Integrated TPM (Trusted Platform Module) for Windows XP (SP2)
Download
Intel Integrated Trusted Platform Module