ASRock 775XFire-eSATA2 Quick Installation Guide - Page 15

The DIMM only fits in one correct orientation. It will cause permanent damage to the motherboard and the DIMM if you force the DIMM into the slot at incorrect orientation. Step 3. Firmly insert the DIMM into the slot until the retaining clips at both ends fully snap back in place and the DIMM is properly seated. 2.4 Expansion Slots (PCI, PCI Express, and AGI Express Slots) There are 3 PCI slots, 2 PCI Express slots, and 1 AGI Express slot (PCI Express x4) on this motherboard. PCI slots: PCI slots are used to install expansion cards that have the 32-bit PCI interface. PCIE Slots: PCIE1 (PCIE x16 slot) is used for PCI Express cards with x16 lane width graphics cards. PCIE2 (PCIE x1 slot) is used for PCI Express cards, such as Gigabit LAN card, SATA2 card, etc. AGI Express slot (PCI Express x4): AGI Express slot (PCI Express x4) is used to install PCI Express expansion cards. For the information of the compatible PCI Express VGA cards, please refer to the "Supported PCI Express VGA Card List for AGI Express Slot (PCI Express x4)" on page 9. Installing an expansion card Step 1. Before installing the expansion card, please make sure that the power supply is switched off or the power cord is unplugged. Please read the documentation of the expansion card and make necessary hardware settings for the card before you start the installation. Step 2. Remove the bracket facing the slot that you intend to use. Keep the screws for later use. Step 3. Align the card connector with the slot and press firmly until the card is completely seated on the slot. Step 4. Fasten the card to the chassis with screws. 15 ASRock 775XFire-eSATA2+ Motherboard English