DFI Q7A-551 - Manual (Page 20)

www.dfi .com Chapter 2 Hardware Installation
20
Chapter 2
LEDs
Power LED
SD LED
SD LED
The SD LED will light when the SDIO card is inserted into the SD/MMC socket.
Power LED
The power LED indicates that there is power on the system board. Power-off the PC and then
unplug the power cord prior to installing any devices. Failure to do so will cause severe dam-
age to the system board and components.
Expansion Slots
Mini PCIe Slot
The Mini PCIe socket is used to install a Mini PCIe card. Mini PCIe card is a small form factor
PCI card with the same signal protocol, electrical definitions, and configuration definitions as
the conventional PCI.
SIM Card Socket
The SIM slot on the system board is used to insert a SIM card.
SD Card Socket
This expansion port is used to insert a Secure Digital Input/Output (SDIO) device. Aside from
storing data files, an SDIO card is also capable of storing powerful software applications.
Mini PCIe
(supports PCIe and USB signals)
Mini PCIe
(Supports mSATA signal)
SIM Card Socket
SD Card Socket