Lenovo Is6xm Rev 1.0 Motherboard Manual -

| Feature | Details | | :--- | :--- | | | µATX (24.5 cm × 24.5 cm) | | Chipset | Intel Q67 Express (PCH) | | CPU Socket | LGA 1155 | | Compatible CPUs | Intel Core i7-2600, i5-2400, i3-2100, Pentium G series (Sandy Bridge, 32nm) | | Memory | 4 x DDR3 DIMM slots, dual-channel, up to 1333 MHz, max 16 GB (non-ECC, unbuffered) | | Integrated Graphics | Intel HD Graphics 2000/3000 (via VGA, DVI, or DisplayPort – depending on I/O shield) | | Expansion Slots | 1 x PCIe x16 (v2.0), 2 x PCIe x1 (v2.0), 1 x legacy PCI (32-bit/33 MHz) | | Storage | 4 x SATA II (3 Gb/s), 2 x SATA III (6 Gb/s) | | USB Ports | Rear: 6 x USB 2.0; Header: 2 x USB 2.0 front panel | | Networking | Realtek RTL8111E Gigabit Ethernet | | Audio | Realtek ALC662 5.1-channel HD audio (line-out, mic-in, line-in) | | Rear I/O (Typical) | 2 x PS/2 (keyboard/mouse), 1 x VGA, 1 x DVI, 4 x USB 2.0, 1 x RJ45, 3 x audio jacks | | Power Connectors | Proprietary 14-pin (main) + proprietary 10-pin (auxiliary) – not standard ATX 24-pin | | BIOS | AMI UEFI BIOS (Lenovo custom) |

For optimal dual-channel performance with two sticks of RAM, populate slots 1 and 3 (the matching color slots farthest from the CPU socket first). 4. Power Supply Connections (Proprietary Alert)

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. Lenovo Is6xm Rev 1.0 Motherboard Manual

It wasn't a manual. It was a map.

: Supports Intel Core i3, i5, and i7 (Sandy Bridge and Ivy Bridge architectures) via the LGA 1155 socket. | Feature | Details | | :--- | :--- | | | µATX (24

: Power LED . Connects to your system power indicator light.

Before upgrading or troubleshooting your IS6XM Rev 1.0, it is crucial to understand its hardware foundations. Specification Details Custom Micro-ATX (Proprietary mounting and power layout) Chipset Intel Q67 Express Chipset Socket CPU Support 2nd Generation Intel Core i3, i5, i7 (Sandy Bridge) Memory Slots 4 × DDR3 DIMM slots Max Memory Up to 32GB DDR3 Dual-Channel (1333/1600 MHz) Expansion Slots 1 × PCIe x16, 1 × PCIe x1, 2 × PCI Slots Storage 4 × SATA ports (mix of SATA II 3Gbps and SATA III 6Gbps) 2. Processor (CPU) Compatibility Front Panel Proprietary 13-pin (2x7, one pin missing)

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 .

| Specification | Detail | | :--- | :--- | | | Foxconn (for Lenovo) | | Model Number | IS6XM Rev. 1.0 | | Form Factor | Micro-ATX (mATX) | | CPU Socket | LGA 1155 | | Compatible Processors | Intel 2nd & 3rd Gen Core i7, i5, i3, Pentium, Celeron, and Xeon E3-12xx v2 | | Chipset | Intel Q67 Express (Note: Some sources may list Q65/H61, but Q67 is the primary reference) | | Memory (RAM) | 4x 240-pin DDR3 DIMM slots, dual-channel architecture | | Max Memory Support | Up to 32GB of non-ECC DDR3 memory | | Expansion Slots | 1x PCI Express x16 (for graphics), 1x PCI Express x1, 2x PCI | | Storage Interfaces | SATA II and SATA III connectors | | Integrated Audio | 6-channel HD Audio CODEC, Realtek ALC662 | | Integrated Ethernet | Gigabit LAN, Intel 82579LM | | Rear I/O Ports | 1x VGA, 1x DisplayPort, 6x USB 2.0, 1x Serial (RS-232), 1x RJ-45 Ethernet, Audio jacks | | USB Headers | Additional USB 2.0 headers for front panel ports | | BIOS | 8MB flash ROM (e.g., MX25L6406EM2I) |