A server tray assembly includes a server tray support configured to receive a server board that includes a working fluid conduit fluidly coupled to a server board connector disposed on a back plane of the server board, a back wall of the server tray support includes a fluid connector configured to form an unbiased fluid connection with the server board connector; and a locking assembly secured to at least one of a server rack or the server tray support, the locking assembly disposed opposite the fluid connector is configured to engage a portion of the server board to bias the server board toward the fluid connector to fluidly seal the unbiased fluid connection between the server board connector and the fluid connector of the server tray support.