The ASUS K53SD X53S 60-N3EMB1300-025 GT610M REV5.1 is a motherboard designed for the ASUS K53SD laptop series, supporting Intel Core i3/i5/i7 processors (Sandy Bridge architecture). It features the Intel HM65 Express chipset with support for up to 16GB DDR3 memory across 2 SODIMM slots (1333MHz frequency). The board includes an integrated NVIDIA GeForce GT610M discrete graphics solution with 1GB/2GB VRAM options, supporting DirectX 11 and Optimus technology for power-efficient graphics switching. Storage conNECtivity consists of 1x SATA 3.0Gbps port for HDD/SSD and an optical drive interface. Expansion capabilities include 1x Mini PCI-E slot (occupied by WiFi card) and NECessary conNECtors for laptop peripherals. The board supports USB 2.0/3.0 ports, HDMI 1.4 output, VGA port, and integrated audio solutions. This revision 5.1 motherboard maintains compatibility with original K53SD chassis components including display panel, keyboard, and cooling system.