Lenovo IS6XM Motherboard. LGA1155 Socket. Core i5 2400 3.1 Ghz CPU. 6GB DDR3 Ram. 1TB Hard Drive. 400 Watt Roswill PSU. Forums - Linus Tech Tips M81-7517-CPU-Upgrade - English Community - Lenovo Forums
You can find the detailed layout, including front panel pinouts and jumper settings, in the ThinkCentre M81, M91, and M91p Hardware Maintenance Manual provided by Lenovo Support Header/Port Description Standard 24-pin ATX and 4-pin CPU power. Front Panel Proprietary 13-pin (2x7, one pin missing) Lenovo header. Note: Standard ATX cases may require an adapter.
One user reported successfully updating their BIOS to 9HKT58A on a Q65/Q67 motherboard, which then allowed support for 22nm processors. Others have noted that the IS6XM's BIOS can be locked and may require a forced flash for modification. The update can be performed from DOS, Windows 7, or a Windows PE environment. Lenovo Is6xm Rev 1.0 Motherboard Manual
The following appendices are included:
The motherboard may default to a lower, safer speed like 1333MHz. Lenovo IS6XM Motherboard
Standard retail motherboards use a 24-pin ATX connector. The IS6XM features a proprietary 4-pin CPU power and a 14-pin main ATX power connector .
Usually colored black or orange—best used for older mechanical hard drives or optical disc drives. 7. Common Troubleshooting and BIOS Beep Codes 6GB DDR3 Ram
If the board fails to start up after installing new components or modifying core performance settings, you must manually reset the BIOS configuration via the clear CMOS jumper ( CLR_CMOS ):
