
414 The Essential Guide to Serial ATA and SATA Express
Presence detection capabilities are defined for Port Selectors utilizing protocol-based port selection
only. Systems utilizing side-band port selection must be preconfigured for side-band port selection, and,
therefore, those systems can also be preconfigured to support presence detection. Presence detection is
an optional feature of protocol-based Port Selectors.
SError Register Enhancement for Presence Detection
The Serial ATA interface error register (SError) as defined in the SATA specification and Serial ATA
II: Extensions to Serial ATA 1.0 specification includes indications for various ...