A bracket for a slide assembly includes a fixing base which is disposed on a slide assembly and includes a first wall, a second wall, a first side wall, and a channel. The first wall has a first bend portion perpendicular to the second wall. The second wall has a second bend portion corresponding to the first wall. A sliding member is slidably connected to the channel of the fixing base and includes a third wall, a fourth wall, and a second side wall. The third wall has a third bend portion perpendicular to the fourth wall. The fourth wall has a fourth bend portion corresponding to the third bend portion. A fixing member is connected to the sliding member and includes a fixing portion. The length of the sliding member is adjustable with respect to the fixing base to fit the longitudinal depth of a rack for mounting purpose.