A terminal module includes an insulating member, a number of conductive terminals, and a conductive plastic. Each conductive terminal includes a fixing portion. The conductive terminals include a group of signal terminals, a first ground terminal and a second ground terminal. The terminal module includes a first rib, a second rib and a groove. The first rib is adjacent to but not in contact with the fixing portion of the first ground terminal. The second rib is adjacent to but not in contact with the fixing portion of the second ground terminal. The present disclosure also relates to a backplane connector having the terminal module. Compared with the prior art, by making the first ground terminal and the second ground terminal non-conducting, it easier to determine the accuracy of the electrical test.