Abstract: A method includes providing a substrate having a surface such that a first hard mask layer is formed over the surface and a second hard mask layer is formed over the first hard mask layer, forming a first pattern in the second hard mask layer, where the first pattern includes a first mandrel oriented lengthwise in a first direction and a second mandrel oriented lengthwise in a second direction different from the first direction, and where the first mandrel has a top surface, a first sidewall, and a second sidewall opposite to the first sidewall, and depositing a material towards the first mandrel and the second mandrel such that a layer of the material is formed on the top surface and the first sidewall but not the second sidewall of the first mandrel.

Abstract: A server includes a first server unit, a second server unit, a hinge and a connecting element. The second server unit is disposed on the first server unit and is electrically connected to the first server unit. The second server unit is pivoted to the first server unit through the hinge. The connecting element is disposed between the first server unit and the second server unit. The connecting element has a first connection end and a second connection end, wherein the first connection end is connected to the first server unit, and the second connection end is connected to the second server unit. A server system including a rack and at least one server is also provided.

Abstract: A socket wrench contains: a body including a first face, a second face, and an accommodating cavity having a stop ring arranged on the first face. A ratchet holder is accommodated in the accommodating cavity and has a polygonal groove, a first peripheral segment, a second peripheral segment, and a toothed portion. The first peripheral segment is inserted through the stop ring, the toothed portion engages with a ratchet driving device beside the accommodating cavity, and the second peripheral segment is inserted into the second face and has an elastic element fitted thereon. A clamping device includes a guiding portion having a small-diameter contacting section and a large-diameter retracting section. The small-diameter contacting section is located adjacent to the first face, and the first peripheral segment has at least one locking member moving in the polygonal groove along the small-diameter contacting section and the large-diameter retracting section.

Abstract: A socket wrench contains: a body including a first face, a second face, and an accommodating cavity having a stop ring arranged on the first face. A ratchet holder is accommodated in the accommodating cavity and has a polygonal groove, a first peripheral segment, a second peripheral segment, and a toothed portion. The first peripheral segment is inserted through the stop ring, the toothed portion engages with a ratchet driving device beside the accommodating cavity, and the second peripheral segment is inserted into the second face and has an elastic element fitted thereon. A clamping device includes a guiding portion having a small-diameter contacting section and a large-diameter retracting section. The small-diameter contacting section is located adjacent to the first face, and the first peripheral segment has at least one locking member moving in the polygonal groove along the small-diameter contacting section and the large-diameter retracting section.

Abstract: A fixture for fixing a disk drive inside a computer case is disclosed. The fixture includes a body, wherein at least a screw eye is set on the body to fix the body on the disk drive; at least a positioning brace and at least an elastic buckle extending from said body in a direction away from the disk drive to fix the body inside the computer case.

Abstract: A fixture for fixing a disk drive inside a computer case is disclosed. The fixture includes a body, wherein at least a screw eye is set on the body to fix the body on the disk drive; at least a positioning brace and at least an elastic buckle extending from said body in a direction away from the disk drive to fix the body inside the computer case.