Abstract: The embodiments of the disclosure provide an immersion liquid cooling device and a liquid cooling system. The liquid cooling device includes a cabinet comprising a first cavity and a second cavity integrated on a side wall of the first cavity; and a heat exchange module adapted to be inserted into the second cavity via an opening on the second cavity, and comprising a heat exchanger, a coolant driving device and a guiding assembly, the heat exchanger being configured to cool the first coolant with the second coolant, the coolant driving device being configured to drive the first coolant to circulate between the second cavity and the first cavity, and the guiding assembly comprising a liquid flow channel configured to guide the first coolant from the coolant driving device to the heat exchanger.

Abstract: Axially compressible, F-connectors for conventional installation tools for interconnection with coaxial cable include biasing fingers for promoting electrical continuity despite inadequate nut tightening. Each connector has a rigid nut, a post penetrating the nut, a tubular body, and an end cap. The conductive post coaxially extends through the connector, linking the nut and body. A post end penetrates the coaxial cable. Each connector body comprises a plurality of radially, spaced apart biasing fingers for pressuring the nut to insure mechanical and electrical contact with the post. In one form of the invention the fingers border spaced apart notches in the body, and extend parallel with the axis of the connector. In an alternative embodiment, fingers are defined between radially spaced-apart slots on a flange associated with the body.