NEW Dell B21 Sliding Rails - 2U Rail Kit for PowerEdge (Type B21/ReadyRails II)
PowerEdge R550/R750xs/R760xs ReadyRails II Y Y Y X X. PowerEdge R760/R7615/R7625 ReadyRails II Y Y Y X X. PowerEdge CSP HS5620 ReadyRails II Y Y Y X X. Precision 7960 Rack ReadyRails II Y Y Y X X. may fit other models not listed above.