HP 349239-B21 Serial ATA technology, 2nd edition - Page 6
Cabling and connector, Initiators
UPC - 808736769419
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Figure 5. Example of SATA devices in a domain. Cabling and connector SATA replaces the parallel ATA 40-pin connector and 18-inch long flat ribbon cable with a 7-pin connector (four signal lines and three ground lines) and a small diameter cable up to 1 meter long (Figure 6). The thinner serial cable improves both airflow and routing. SATA also features a new 7/8-inch wide, 15-pin, single-row power cable connector. The power connector provides optional hot-plug capability, which allows a drive to be swapped out without powering down the machine. Figure 6. The 7-pin SATA data cable and the 15-pin power cable Initiators A SATA initiator is a controller that can be embedded into the motherboard (Figure 7) or a host bus adapter (HBA) plugged into a PCI expansion slot. Embedded SATA controllers typically have two ports for connection to internal SATA devices while a SATA HBA can have a number of ports for internal or external devices. Figure 7. Embedded SATA controller 6