Advanced Configuration and Power Interface Specification

ACPI-Defined Devices and Device-Specific Objects
Element Object Type Description
Type Integer
(BYTE)
Specifies the host connector type. It is ignored by OSPM if the port is not user
visible:
0x00: Type ‘A’ connector
0x01: Mini-AB connector
0x02: ExpressCard
0x03: USB 3 Standard-A connector
0x04: USB 3 Standard-B connector
0x05: USB 3 Micro-B connector
0x06: USB 3 Micro-AB connector
0x07: USB 3 Power-B connector
0x08: Type C connector - USB2-only
0x09: Type C connector - USB2 and SS with Switch
0x0A:
Type C connector - USB2 and SS without Switch
0x0B– 0xFE: Reserved
0xFF:
Proprietary connector
Reserved0 Integer This value is reserved for future use and must be zero.
Reserved1 Integer This value is reserved for future use and must be zero.
Additional Notes:
The definition of a 'connectable' port is dependent upon the implementation of the USB port within a
particular platform. For example,
• If a USB port is user visible (as indicated by the _PLD object) and connectable, then an end user
can freely connect and disconnect USB devices to the USB port.
• If a USB port is not user visible and is connectable, then an end user cannot freely connect and
disconnect USB devices to the USB port. A USB device that is directly "hard-wired" to a USB
port is an example of a USB port that is not user visible and is connectable.
• If a USB port is not user visible and is not connectable, then the USB port is physically
implemented by the USB host controller, but is not being used by the platform and therefore
cannot be accessed by an end user.
A USB port cannot be specified as both visible and not connectable.
The pins of a Type-C connector support one USB2 signal pair (D+/D-) and two SuperSpeed signal
pairs (SSTXp1/SSTXn1 and SSRXp2/SSRXn2). The use of two SS signal pairs allows the CC wire
and USB SuperSpeed data bus wires to be used for signaling within the cable track without regard to
the orientation and twist of the cable.
Type C connector - USB2 USB2-only receptacles
These only implement the USB2 signal pair, and do not implement the SS signal
pairs.
Type C connector - USB2 and SS with Switch receptacles
These implement the USB2 signal pair, and a Functional Switch with a physical
Multiplexer that is used to dynamically connect one of the two receptacle SuperSpeed
signal pairs to a single USB Host Controller port as function of the Type-C plug
orientation.
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