A server rack includes a base and a receiving bracket secured to the base. The base includes a pair of parallel guiding rails. A limiting member is formed on each guiding rail and extends along a first direction. A horizontal guiding slot is defined in the limiting member along an extension direction of each guiding rail. The receiving bracket is supported on and slidable long the guiding rails in the first direction, including a pair of opposite sidewalls parallel to the guiding rails. A horizontal sliding portion is formed on each sidewall of the receiving bracket corresponding to the guiding slot of the limiting member, and engaged with the guiding slot in a second direction perpendicular to the first direction when the receiving bracket is entirely retracted into the base, to prevent the receiving bracket shaking relative to the base during shipment.