Abstract: The invention relates to detection technology field and provides a tool-less tray that is detachably mounted on a casing inner wall. The tray has a plate body and a side wall; at least 3 shaped holes are disposed on the side wall; at least one screw pillar is fixed to the plate body and is configured to be firmly connected to an additional function board. The technical solution provided by the invention is tool-less, realizes fast installation and detachment of tray, realizes fast addition and removal of additional function board in limited space and is convenient to be used.

Abstract: An interface card cage includes a first assembly and a second assembly. The first assembly includes a first side wall, a second side wall, and a bent portion. The second side wall has an opening. The bent portion and the first side wall extend in different directions. The bent portion includes a protrusion extending from the bent portion. The second assembly includes an assembly part having a slot. The assembly part includes a first side plate and a second side plate. The first side plate has a recess. The assembly part has a first edge and a second edge. A direction from the first edge to the second edge is different from a direction from the first side plate to the second side plate. The bent portion of the first assembly is located in the slot. The protrusion is located in the recess.

Abstract: An interface card cage includes a first assembly and a second assembly. The first assembly includes a first side wall, a second side wall, and a bent portion. The second side wall has an opening. The bent portion and the first side wall extend in different directions. The bent portion includes a protrusion extending from the bent portion. The second assembly includes an assembly part having a slot. The assembly part includes a first side plate and a second side plate. The first side plate has a recess. The assembly part has a first edge and a second edge. A direction from the first edge to the second edge is different from a direction from the first side plate to the second side plate. The bent portion of the first assembly is located in the slot. The protrusion is located in the recess.

Abstract: The disclosure provides an expansion card cage including a cage, a latch and a fastener. The cage includes a back plate, a first mount plate, and a second mount plate. The back plate has two surfaces opposite to each other and two openings. The first mount plate and the second mount plate respectively protrude from the two surfaces of the back plate. The first mount plate is configured for an installation of a riser card configured for an insertion of an expansion card. The openings of the back plate are configured to expose the expansion card. The second mount plate has a fixation hole. The latch has a through hole. The fastener is disposed through the through hole of the latch and fixed in the fixation hole of the second mount plate so as to force the latch to press against a tab portion of the expansion card.

Abstract: The disclosure provides including a casing, a mother board, a hard disk drive module, a fan module, and an expansion module. The casing has a hard disk drive accommodation area, a fan accommodation area, and a motherboard accommodation area located between the hard disk drive accommodation area and the fan accommodation area. The motherboard is disposed in the motherboard accommodation area. The hard disk drive module includes hard disk drives. The fan module includes fans. The expansion module is selectively disposed in the hard disk drive accommodation area with the hard disk drives, or disposed in the fan accommodation area with the fans.

Abstract: The invention relates to detection technology field and provides a tool-less tray that is detachably mounted on a casing inner wall. The tray has a plate body and a side wall; at least 3 shaped holes are disposed on the side wall; at least one screw pillar is fixed to the plate body and is configured to be firmly connected to an additional function board. The technical solution provided by the invention is tool-less, realizes fast installation and detachment of tray, realizes fast addition and removal of additional function board in limited space and is convenient to be used.