Mobile rack with IDE and USB interfaces

Claim 1

A mobile rack with IDE and USB interfaces, comprising: an outer frame with a rear side, having a central frame chamber; an outer circuit board with an outer side and an inner side, being attached to the rear side of the outer frame, the outer circuit board having a 40-pin IDE interface connector, a power input socket and a first USB signal connector at the outer side thereof respectively; a 50-pin outer signal connector disposed at the inner side of and connected to the outer circuit board; a power line between the outer signal connector and a power input socket; a switch on the outer frame for disconnecting/connecting the outer signal connector with an outer power source; +data and −data signals in the first USB signal connector connected with two vacant pins in the outer signal connector and pins in the first signal USB signal connector including a +5V and two ground lines are connected to corresponding pins in the outer signal connector in parallel to enable the outer signal connector to have a IDE interface and a USB interface respectively; wherein the outer signal connector has following pin designations: a 1st to a 40th pins are IDE interface signals, a 41st and a 42nd pins are connected to the +data and the −data signals in the USB signal connector respectively, a 43rd and a 44th pins connect with the power input socket and a +5V power source of the USB signal connector in parallel, a 45th and 48th pins for connecting with the power input socket and a grounded line in the first USB signal connector in parallel, and a 49th and a 50th pins for connecting with a +12V power source in parallel; an inner rack at a rear at a rear side thereof having an inner circuit board with an outer side and an inner side, the outer side having a 50-pin inner signal connector connecting with the 50-pin outer signal connector, the inner side having a circuit to separate a signal as a IDE interface connector, the inner rack further including a power output plug and a second USB signal connector, whereby a data storage device with a IDE interface or a USB periphery device with a USB interface may be mounted in the inner rack and connected to the outer frame via engagement of the 50-pin inner and outer signal connectors; the inner signal connector has the following pin designation: a 1st to a 40th pins are IDE interface signals, a 41st and a 42nd pins are +data and −data signals respectively, a 43rd and a 44th pins are +5V power sources in parallel, a 45th and 48th pins are ground lines in parallel, and a 49th and a 50th pins are +12 power sources in parallel.