A cable management assembly ,comprising: a cable management device comprising a first arm , a second arm and an intermediate frame pivoted between the first arm and the second arm , the intermediate frame comprising an upper frame and a lower frame , the upper frame and the lower frame respectively having a first mounting feature ; and a supporting device configured to support at least one of the first arm , the second arm and the intermediate frame , the supporting device comprising a base and an elastic member , wherein the elastic member is arranged on the base , the elastic member has a second mounting feature , and the second mounting feature is configured to be detachably mounted on said first mounting feature ; wherein the second mounting feature of the elastic member comprises a guiding portion , when the supporting device is moved along a mounting direction (D) relative to the cable management device , the second mounting feature of the supporting device and the first mounting feature of the cable management device is capable of being guided to be mounted through the guiding portion ; wherein one of the cable management device and the supporting device comprises a blocking feature , the base has a front end (f1) and a rear end (r1) opposite to the front end (f1), the second mounting feature is located between the blocking feature and the front end (f1) of the base , the blocking feature is located between the second mounting feature and the rear end (r1) of the base , when the supporting device is mounted to the cable management device by orienting the rear end (r1) of the base as a mounting interface along the mounting direction (D), the supporting device and the cable management device are blocked by each other through the blocking feature , in order to prevent the second mounting feature of the supporting device and the first mounting feature of the cable management device from being mounted. a cable management device comprising a first arm , a second arm and an intermediate frame pivoted between the first arm and the second arm , the intermediate frame comprising an upper frame and a lower frame , the upper frame and the lower frame respectively having a first mounting feature ; and a supporting device configured to support at least one of the first arm , the second arm and the intermediate frame , the supporting device comprising a base and an elastic member , wherein the elastic member is arranged on the base , the elastic member has a second mounting feature , and the second mounting feature is configured to be detachably mounted on said first mounting feature ; wherein the second mounting feature of the elastic member comprises a guiding portion , when the supporting device is moved along a mounting direction (D) relative to the cable management device , the second mounting feature of the supporting device and the first mounting feature of the cable management device is capable of being guided to be mounted through the guiding portion ; wherein one of the cable management device and the supporting device comprises a blocking feature , the base has a front end (f1) and a rear end (r1) opposite to the front end (f1), the second mounting feature is located between the blocking feature and the front end (f1) of the base , the blocking feature is located between the second mounting feature and the rear end (r1) of the base , when the supporting device is mounted to the cable management device by orienting the rear end (r1) of the base as a mounting interface along the mounting direction (D), the supporting device and the cable management device are blocked by each other through the blocking feature , in order to prevent the second mounting feature of the supporting device and the first mounting feature of the cable management device from being mounted. <EOS>