A pluggable module includes a base, a cover assembled with the base to form a housing and a latching mechanism at least partially disposed within the housing. The latching mechanism includes an actuating portion and a single sliding portion which is connected with the actuating portion and disposed within the housing, the single sliding portion including a flat board and two sliding legs respectively extending from two opposite sides of the flat board, each sliding leg having a latching protrusion formed thereon and exposed outside the housing for latching with and detaching from the cage. The present invention uses a single sliding portion to replace two sliding arms thereby simplifying the manufacturing and assembling process, in turn, reducing the manufacturing and assembling cost.