Abstract: The present disclosure relates to methods and intermediates useful for preparing a compound of formula I: or a co-crystal, solvate, salt or combination thereof.

Abstract: A printed-circuit board (PCB) test jack comprises a body portion adapted for mounting on the top surface of a PCB and to provide mechanical support and signal and ground connections to an external test probe. At least one surface mount ground conductor is connected to and extends from the body portion to provide the ground connection; the ground conductors are arrayed for attaching to corresponding surface pads on the PCB's top surface. A single through-hole pin for insertion into a corresponding through-hole on the PCB is electrically isolated from the surface mount ground conductors and is connected to the body portion for providing the signal connection.

Abstract: A printed circuit board (PCB) test jack is presented that reduces the number of PCB through-holes required for its mounting, thereby reducing signal routing interference for high-density multi-layer PCBs. The present test jack comprises a body portion arranged to interface with an external test probe, at least one surface mount conductor connected to the body portion and arrayed for attaching to corresponding surface pads on the surface of a PCB, and a signal conductor connected to the body portion. The signal conductor comprises a single through-hole pin for insertion into a corresponding single through-hole on the PCB. Using only a single through-hole pin reduces signal routing interference in the PCB when compared with a test jack employing multiple through-hole pins. Alternatively, a test jack in accordance with the present invention may employ no through-hole pins.

Abstract: A computer system includes a first power rail having a first voltage level, such as 5 volts, and a second power rail having a second voltage level, such as 3.3 volts. A PCI connector receives a first type PCI card having I/O buffers operable at the first voltage level or receives a second type PCI card having adaptable I/O buffers operable at the first voltage level or the second voltage level. The PCI connector includes voltage I/O pins for supplying power to the I/O buffers. Sensing circuitry provides a sense signal having a first state when the first type PCI card is inserted and having a second state when the second type PCI card is inserted. Switching circuitry is responsive to the sense signal at the first state to provide the first voltage level on the voltage I/O pins and is responsive to the sense signal at the second state to provide the second voltage level on the voltage I/O pins.