SCSI
Also known as:
“scuzzy”,
Small Computer System Interface
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SCSI, like SATA, is another faster alternative to the IDE hard drive connection. SCSI supports daisy-chaining, whereby up to 16 devices can be connected to the motherboard's SCSI port.
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SD card
Also known as:
Secure Digital card
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An SD card is a flash-memory storage unit. SD cards are extremely small, portable and not at all fragile, either. One of the most common uses for SD cards is storage of digital photos because they are compatible with most digital cameras. The card can easily be transferred between devices like computers, laptops, mobile phones and game consoles. SD cards can hold anywhere from 16 MB of data to several gigabytes, bigger than many hard drives.
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Serial ATA
Also known as:
SATA
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Serial ATA is one of a few connection types used to connect hard disks to a computer's motherboard and CPU. Serial evolved from and is faster than the IDE connection type. SATA also has much smaller cabling, whereas IDE has very bulky and inconvenient cabling. Serial ATA supports speeds of 150 MBps (not Mbps).
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sound card
Also known as:
audio card
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A sound card is typically a PCI expansion card to enable better sound quality or features in a PC. Sound cards can support either digital or analog input and output, or both. Better sound cards tend to support more channels which mean more sounds can be played back and mixed together at one time. Many motherboards contain on-board sound hardware, and thus do not absolutely require a separate sound card for playback and recording.
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