No the system clock is built into the motherboard.
System Unit
Yes, NICs can be a form of expansion card (as long as the NIC is not built into the motherboard).
Video Card.
Pioneer AVIC-N5 In-Dash GPS Navigation System offers a USB Direct feature and a built in memory card slot for memory expansion.
Video Card.
The purpose of a time card clock is to accurately know hourly employee's time in the office. This system is being replaced by employees clocking in on the computer.
yes, its what enables the video card to be attached to the motherboard if I understand your question right
Yes, it can. Some motherboards have an intergrated video card.
The expansion card called the host adapter is responsible for managing all devices on the SCSI bus. SCSI is a peer to peer interface
The Windows utility used to uninstall an expansion card is Device Manager. You can access it by right-clicking the Start button and selecting "Device Manager." In Device Manager, locate the specific expansion card under the appropriate category, right-click it, and choose "Uninstall device" to remove it from the system. This process helps ensure that the operating system no longer recognizes the card before physically removing it from the hardware.
A clock card. Used by employees to clock in and out of work. The card records the employees weekly working hours.
Without a motherboard no computer would function ! It is the main circuit board that holds the processor, memory modules and any expansion cards such as Graphics card, Modem card, Network card etc. Any harddisk drives, CD/DVD drives and floppy drives are connected to and controlled by the Motherboard. As are a keyboard, mouse, printer or scanner.