The is a proprietary microATX (uATX) motherboard manufactured by Foxconn for Lenovo's commercial desktop lines . It serves as the primary system board for high-performance business machines, including the ThinkCentre M81, M91, M91p, M6300T, and M8300T .
For those seeking highly technical documentation like schematics and boardview files for component-level repair, these community resources are your best bet:
The Lenovo is a micro-ATX motherboard commonly found in ThinkCentre M81 and M91/p desktop systems. While a dedicated "manual" for just the board is rare, its full technical details are documented in the ThinkCentre M91p Hardware Maintenance Manual . Core Specifications Lenovo Is6xm Rev 1.0 Motherboard Manual
The fix was the Rev 1.1. A silent revision. The only physical difference? A tiny, laser-cut trace that disabled JP11. The silkscreen still said "Rev 1.0" on the early 1.1 boards, but the circuit was dead. The real 1.0—the "green ones," as his father called them, for a specific shade of solder mask used only on the first run—was a listening post.
Connect the HDD LED wire directly to Pin 1 (+) and Pin 3 (-) . Direction is crucial; if reversed, the light will not function. While a dedicated "manual" for just the board
Understanding the core architecture of the IS6XM is critical before sourcing upgrade parts. Specification Intel Q67 Express Chipset Form Factor Micro-ATX (uATX) - Proprietary Lenovo mounting orientation CPU Socket Processor Support 2nd Generation Intel Core i3, i5, i7 (Sandy Bridge) Memory Slots 4 × 240-pin DDR3 DIMM slots Maximum RAM 32 GB (4 × 8GB modules) Memory Type DDR3 1333 / 1066 MHz non-ECC, unbuffered Expansion Slots 1 × PCIe x16 (Gen 2.0), 1 × PCIe x1, 2 × PCI (Legacy) Storage Interfaces 4 × SATA ports (2 × SATA III 6Gbps, 2 × SATA II 3Gbps) Audio Realtek ALC662 HD Audio Network Intel 82579LM Gigabit Ethernet (vPro compliant) 2. Processor and Memory Compatibility CPU Support
Connect your Power LED leads across Pin 2 (+) and Pin 4 (-) . The only physical difference
Not natively supported on all revisions (standard Lenovo cases often lack a reset button). ⚠️ Compatibility Notes
The system features a standard 24-pin ATX main power connector and a 4-pin ATX 12V processor connector . Standard aftermarket ATX power supplies will plug in natively without a 14-pin adapter.
The most challenging aspect of reusing the IS6XM board in a standard aftermarket computer case is the . Standard cases use individual 2-pin or 1-pin connectors.