GA-M55S-S3 (rev. 2.0) is a motherboard from GIGA-BYTE. It supports AMD Socket AM2 CPUs.
This manual covers the hardware layout and BIOS configuration of the Gigabyte GA-M55S‑S3 motherboard, which uses an AMD Socket AM2 CPU socket. It includes detailed sections on CMOS settings, integrated peripherals, power management, and troubleshooting.
The document also contains regulatory declarations (FCC, CE) and a list of supported components such as DDRII memory, PCI‑Express slots, SATA ports, and USB interfaces, helping users install and configure the system correctly.
| CPU socket | AMD Socket AM2 |
|---|---|
| Supported memory | DDRII 800/667/533 MHz DIMM (dual channel) |
| Memory channels | Dual Channel |
| Graphics interface | PCI Express x16 |
| Additional expansion slot | PCI Express x1 |
| SATA ports | 4 × SATA 3 Gb/s |
| IDE interface | ATA33/66/100/133 |
| Onboard audio codec | nVIDIA® nForce 550 |
| Network controller | Marvell 88E1116 |
| System bus | Hyper Transport Bus |
It uses an AMD Socket AM2.
The board supports DDRII DIMM modules at 800, 667, or 533 MHz in dual‑channel mode.
A PCI Express x16 slot is available for graphics cards.