A cold plate, comprising: a housing, a surface of the housing being arranged to provide a thermal interface for cooling an electronic device thermally coupled thereto; at least one channel within the housing and proximate to the surface, arranged for a liquid coolant to flow therethough such that heat received by the thermal interface is transferred to the liquid coolant; and a first coolant port, for transferring liquid coolant to the at least one channel and a second coolant port for transferring liquid coolant from the at least one channel, wherein pins and/or fins are arranged within the at least one channel at least adjacent to but not underneath the first coolant port and/or the second coolant port such that liquid coolant entering the at least one channel flows in all directions in a plane parallel to the surface; wherein: (a) a cross-sectional area of an outlet from the coolant port to the at least one channel is no larger than a cross-sectional area between the outlet and a bottom surface of the at least one channel that is proximate the surface of the housing arranged to provide the thermal interface; and (b) the first coolant port is configured to cause liquid coolant to enter the at least one channel in a direction perpendicular to the surface and the second coolant port is configured to cause liquid coolant to exit the at least one channel in a direction perpendicular to the surface; (c) the pins and/or fins are arranged within the at least one channel adjacent to the first coolant port and/or the second coolant port in a regular, uniformly distributed pattern and/or so as to prevent unobstructed flow of liquid coolant between the first coolant port and the second coolant port; and (d) the pins and/or fins are arranged in a first pattern in a first portion of the at least one channel, adjacent to the first coolant port and/or second coolant port and in a second, different pattern in a second portion of the at least one channel, spaced apart from the first coolant port and/or second coolant port. a housing, a surface of the housing being arranged to provide a thermal interface for cooling an electronic device thermally coupled thereto; at least one channel within the housing and proximate to the surface, arranged for a liquid coolant to flow therethough such that heat received by the thermal interface is transferred to the liquid coolant; and a first coolant port, for transferring liquid coolant to the at least one channel and a second coolant port for transferring liquid coolant from the at least one channel, wherein pins and/or fins are arranged within the at least one channel at least adjacent to but not underneath the first coolant port and/or the second coolant port such that liquid coolant entering the at least one channel flows in all directions in a plane parallel to the surface; wherein: (a) a cross-sectional area of an outlet from the coolant port to the at least one channel is no larger than a cross-sectional area between the outlet and a bottom surface of the at least one channel that is proximate the surface of the housing arranged to provide the thermal interface; and (b) the first coolant port is configured to cause liquid coolant to enter the at least one channel in a direction perpendicular to the surface and the second coolant port is configured to cause liquid coolant to exit the at least one channel in a direction perpendicular to the surface; (c) the pins and/or fins are arranged within the at least one channel adjacent to the first coolant port and/or the second coolant port in a regular, uniformly distributed pattern and/or so as to prevent unobstructed flow of liquid coolant between the first coolant port and the second coolant port; and (d) the pins and/or fins are arranged in a first pattern in a first portion of the at least one channel, adjacent to the first coolant port and/or second coolant port and in a second, different pattern in a second portion of the at least one channel, spaced apart from the first coolant port and/or second coolant port. (a) a cross-sectional area of an outlet from the coolant port to the at least one channel is no larger than a cross-sectional area between the outlet and a bottom surface of the at least one channel that is proximate the surface of the housing arranged to provide the thermal interface; and (b) the first coolant port is configured to cause liquid coolant to enter the at least one channel in a direction perpendicular to the surface and the second coolant port is configured to cause liquid coolant to exit the at least one channel in a direction perpendicular to the surface; (c) the pins and/or fins are arranged within the at least one channel adjacent to the first coolant port and/or the second coolant port in a regular, uniformly distributed pattern and/or so as to prevent unobstructed flow of liquid coolant between the first coolant port and the second coolant port; and (d) the pins and/or fins are arranged in a first pattern in a first portion of the at least one channel, adjacent to the first coolant port and/or second coolant port and in a second, different pattern in a second portion of the at least one channel, spaced apart from the first coolant port and/or second coolant port.