BM Lenovo ThinkCentre M81 Motherboard 03T8005 IS6XM Rev 1.0
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Lenovo IS6XM Motherboard Specifications

CPU

Processor Support Intel Core i7-2600, 2600S (Quad Core)* Core i5-2500, 2500S, 2500T, 2400, 2400S (Quad Core)* Core i3-2100, 2120 (Dual Core)
Socket Type
LGA 1155
Chipset
Intel Q67
Video
Intel HD Graphics
Memory
4 * 240-pin DDR3 DIMM slots Supports Dual Channel DDR3 1333 MHz non-ECC, un-buffered memory (Max 16GB)
Expansion Slots
1 * PCI Express x16
1 * PCI Express x1
2 * PCI
Storage
4 * SATAII 3Gb/s connectors
Audio
Realtek ALC662 – High Definition
Network Adapter
Intel 82579 – (Gigabit)
Rear Panel
1 x VGA Port
1 x Audio I/O
6 x USB Ports
1 x RJ45 LAN Port
1 x Serial Port
1 x Display Port
Internal
1 x 4-pin ATX 12V Power connector
1 x 24-pin ATX Power connector
1 x 4-pin CPU Fan connector
1 x 4-pin Rear System Fan connector
1 x 4-pin Front System Fan connector
1 x Clear CMOS jumper
1 x Battery socket (3V)
1 x Front Panel header
1 x Front Audio header
2 x USB headers