An expansion module for a computing unit of a High-Performance Computer cabinet, the expansion module comprising a casing configured to be removably guided horizontally in a main housing of a computing unit of a High-Performance Computer cabinet, a support card, mounted within the casing, comprising at least one module connector, said module connector being configured to be removably connected to the computing unit, a plurality of card slots connectors, each card slot connector being configured to be removably connected to an expansion card, at least a lever for locking/unlocking the casing to the main housing of the computing unit, said lever being operable manually without using any tools and a handle, pivotable according to a vertical axis, configured for locking/unlocking simultaneously the expansion cards when mounted in the card slot connectors.

A riser bracket for supporting a riser board and a computer card inserted into the riser board is disclosed. The riser bracket includes a first riser bracket piece, a first latch, a second riser bracket piece, and a second latch. The computer card and the riser board are positioned on a motherboard. The first riser bracket piece is configured to be coupled to the riser board. The first latch is configured to the first riser bracket piece to a first mounting point of the motherboard, and to move between a latched position and an unlatched position. The second riser bracket piece is coupled to the first riser bracket piece. The second latch is configured to couple the second riser bracket piece to a second mounting point of the motherboard, and move between a latched position and an unlatched position.

A synergistic composition can be used to treat water containing nitrogen compounds and phosphorus compounds. The synergistic composition includes iron filings, clay particles, aluminum particles, and sand particles. The iron filings, clay particles, and aluminum particles act synergistically to remove nitrogen compounds and phosphorus compounds from water. Specifically, the clay particles attract the nitrogen compounds and the phosphorus compounds to be absorbed onto a surface of the iron filings and the clay particles. The aluminum particles react with the nitrogen compounds via an oxidation reaction to form ammonia compounds, and react with the phosphorus compounds to produce aluminum phosphate. As such, the synergistic relationship between the iron filings, clay particles, and aluminum particles remove nitrogen and phosphorus compounds from water and recover the compounds in usable forms, namely, ammonia and aluminum phosphate.

A synergistic composition can be used to treat water containing nitrogen compounds and phosphorus compounds. The synergistic composition includes iron filings, clay particles, aluminum particles, and sand particles. The iron filings, clay particles, and aluminum particles act synergistically to remove nitrogen compounds and phosphorus compounds from water. Specifically, the clay particles attract the nitrogen compounds and the phosphorus compounds to be absorbed onto a surface of the iron filings and the clay particles. The aluminum particles react with the nitrogen compounds via an oxidation reaction to form ammonia compounds, and react with the phosphorus compounds to produce aluminum phosphate. As such, the synergistic relationship between the iron filings, clay particles, and aluminum particles remove nitrogen and phosphorus compounds from water and recover the compounds in usable forms, namely, ammonia and aluminum phosphate.

A rack security system includes a locking mechanism connected to a server. The locking mechanism is configured to lock onto the busbar of a rack. When the locking mechanism is locked to the busbar, the locking mechanism may prevent removal of the server from the rack. When the locking mechanism is unlocked, the server may be removable from the rack.

In an example, a movable lock may include a lock bar and a pivot disposed at a first end of the lock bar. The movable lock may also include a card retainer disposed on the lock bar at a second end of the lock bar, opposite the first end. The card retainer may include a card notch sized to receive an edge of a system card.

An extension mechanism includes a bracket, a carrier, a slidable member, and a covering plate. The bracket includes a plurality of first buckling portions and a plurality of second buckling portions. The carrier is configured to move along a first axis relative to the bracket. A fastening portion of the carrier is configured to clamp one of the first buckling portions. The slidable member moves in a sliding groove of the covering plate along a second axis. A hook portion of the slidable member is configured to clamp one of the second buckling portions. The covering plate is connected to the slidable member and stops an extension module located on the bracket, to prevent the extension module from dropping or loosening when the extension module is vibrated.

An unlocking structure adapted to an insert slot is provided. An expansion card is adapted to be inserted into the insert slot and fixed on the insert slot by a locking component. The unlocking structure includes a base and an operation shaft. The base is fixed on the insert slot. The operation shaft is pivoted to the base. The operation shaft is adapted to rotate in relative to the base from a locking position to an unlocking position to drive the locking component to be separated from the expansion card. In addition, an electronic device having the unlocking structure and an electronic module having the unlocking structure are also provided.

A chassis device adapted for an expansion device is provided and includes a case, a base and a latch. The case includes an avoiding portion. The base is disposed on the case. At least one accommodating portion is formed on the base. The latch includes at least one pivoting portion, a first abutting portion and a second abutting portion. The at least one pivoting portion is movably disposed through the at least one accommodating portion. The latch is slidable between a locking position and a non-locking position. The first abutting portion and the second abutting portion respectively abut against the case and the expansion device when the latch is located at the locking position, and the avoiding portion allows the latch to pivot when the latch is located at the non-locking position. Besides, a server including the aforementioned chassis device is provided.

Housing structure for PCI Express expansion electronic boards able to mechanically stabilize said PCI Express expansion electronic boards so as to guarantee the correct functioning, performance and integrity of the electric interconnection between them and the basic electronic board to which they are connected if there are mechanical stresses such as knocks or vibrations, in order to be able to use PCI Express expansion electronic boards in the automotive field, or in scenarios characterized by perturbations of the important mechanical type. The present invention also concerns an assembly method of the housing structure.