Asus P5E3 User Guide - Page 47

Primary PCI Express x16 slots The primary PCI Express x16 slots support PCI Express x16 graphic cards that comply with the PCI Express specifications. Universal PCI Express slot (max. x4 mode) This motherboard also supports a Universal PCI Express slot with a maximum speed of 2 GB/s. The operating frequency of this slot changes, depending on the type of PCI Express card you install. Refer to the table below for details. If you install two VGA cards, we recommend that you plug the rear chassis fan cable to the motherboard connector labeled CHA_FAN1 for better thermal environment. See page 2-30 for the connector location. Options for Universal PCI Express operating speed PCI Express slot Auto Automatically optimizes performance and functionality according to devices installed x4 mode [fast] User gets the best performance but this mode disables the PCI Express x1 slot x1 mode [compatible] Always runs at PCI Express x1 speed Some PCI Express devices cannot operate on x4/x1 mode. 2.5.7 AI Slot Detector This motherboard comes with on-board LEDs that light up when the PCIE/ PCI devices are not correctly installed. This is a reminder that you should reinstall these devices. Refer to the figure on the right for the location of the LEDs. • The PCIEx16_1 slot (blue) supports PCIE x16 cards only. The AI Slot Detector lights up when you install a x1 or x4 card to this slot. • When the AI Slot Detector lights up for incorrect installation, make sure to shut down the power supply unit before reinstalling the card to avoid electrical shock hazard. ® P5E3 DELUXE DET_X1_1 DET_PCI1 DET_X16_1 DET_X1_2 DET_X16_2 DET_PCI2 DET_X16_3 P5E3 DELUXE/WiFi-AP@n Slot Detector ASUS P5E3 Deluxe/WiFi-AP@n 2-21