referring to fig1 , a laptop stand 100 for a portable device , such as a laptop computer , in accordance with an exemplary embodiment includes two supporting members 110 and a heat dissipation device 130 detachably disposed between the two supporting members 110 . further referring to fig2 , the two supporting members 110 are substantially triangular , and parallel with each other . each of the two supporting members 110 includes a sidewall 111 , an inclined wall 112 , a bottom wall 113 , and a rear wall 117 . the sidewall 111 is substantially triangular . the sidewall 111 may be a right - angled triangle . the inclined wall 112 , the bottom wall 113 and the rear wall 117 extend substantially perpendicularly from three laterals of the sidewall 111 . the inclined wall 112 inclines downwardly from the top end of the rear wall 117 to the front end of the bottom wall 113 , to form a supporting surface 1121 on a top of the inclined wall 112 , with a lower edge bending upwardly to form a stopping portion 114 . therefore , the portable device ( not shown ) may be loaded on the supporting surface 1121 of the inclined wall 112 and prevented from sliding down the supporting surface 1121 by the stopping portions 114 . each of the two supporting members 110 further includes two mounting portions 115 which are located in a virtual plane parallel with the supporting surface 1121 of the inclined wall 112 . the four mounting portions 115 are disposed on opposite surfaces of the two sidewalls 111 correspondingly . each mounting portion 115 defines a blind hole 116 in a top portion . each mounting portion 115 defines a notch 118 communicating with the corresponding blind hole 116 . the heat dissipation device 130 includes a substantially rectangular - shaped cover 131 , two fans 132 fixed in the cover 131 , and four fixing portions 134 extending from an outer surface of the cover 131 corresponding to the four mounting portions 115 . a plurality of holes 1311 are defined in the cover 131 to allow sufficient airflow . each of the four fixing portions 134 is substantially square - shaped . the four fixing portions 134 are located on opposite side surfaces of the cover 131 which face the two supporting members 110 correspondingly . the two fans 132 rotate in a plane parallel with the supporting surface 1121 of the inclined wall 112 , in order to accelerate the speed of the airflow , so as to dissipate the heat produced by the portable device supported on the supporting surface 1121 . in assembly , the four fixing portions 134 are aligned corresponding to the four mounting portions 115 , and inserted into the blind hole 116 and the notch 118 from top to bottom , such that , the heat dissipation device 130 is assembled on the two supporting members 110 . in disassembly , the heat dissipation device 130 is lifted upwards relative to the four mounting portions 115 and disengages from the four mounting portions 115 , such that , the heat dissipation device 130 is disassembled from the two supporting members 110 , it is convenient for portability . in use , the portable device is supported on the supporting surface 1121 of the inclined surfaces 112 of the two supporting members 110 . the heat dissipation device 130 is underneath the portable device without contacting with the portable device , when the fans 132 are actuated , heat produced by the notebook computer is dissipated , therefore , the internal circuit and component parts of the portable device are protected from damage . in this embodiment , the mounting portions 115 are disposed on the supporting members 110 , and the fixing portions 134 are disposed on the heat dissipation device 130 . in other embodiments , the mounting portions 115 may be disposed on the heat dissipation device 130 , and the fixing portions 134 may be disposed on the supporting members 110 . it is to be understood , however , that even though numerous characteristics and advantages of the present disclosure have been set forth in the foregoing description , together with details of the structure and function of the present disclosure , the present disclosure is illustrative only , and changes may be made in detail , especially in matters of shape , size , and arrangement of parts within the principles of the present disclosure to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed .