The Lenovo IS7XM Rev 1.0 motherboard is a server motherboard designed for Lenovo's ThinkServer line. Here's a brief overview:
. While it supports standard DDR3-1333/1600MHz, higher speeds like 1866MHz may be downclocked to 1600MHz by the chipset. Expansion Slots 1 x PCI Express x16 (for discrete graphics). 1 x PCI Express x1. 2 x legacy PCI slots. : Includes four to five on-board SATA connectors (supporting SATA III 6Gb/s). I/O and Connectivity Rear Ports lenovo is7xm rev 1.0 motherboard manual
Lenovo IS7XM Rev 1.0 motherboard is a MicroATX board originally found in business-grade desktops like the Lenovo ThinkCentre M82 The Lenovo IS7XM Rev 1