A powerline communication transmitter comprising: a network interface; a mode selection unit coupled with the network interface, the mode selection unit configured to: determine whether an operational mode associated with a destination powerline communication device communicatively coupled to the network interface is a multiple-input multiple-output, MIMO, mode or a single-input single-output, SISO, mode; determine whether the operational mode of the destination powerline communication device matches an operational mode of the powerline communication transmitter; and characterised in that the mode selection unit is configured to dynamically change (312, 316) the operational mode of the powerline communication transmitter to either the MIMO mode or the SISO mode to match the operational mode of the destination powerline communication device in response to determining the operational mode of the destination powerline communication device does not match the operational mode of the powerline communication transmitter; and wherein the mode selection unit is further configured to: in response to determining to dynamically change (312, 316) the operational mode from the SISO mode to the MIMO mode, dynamically enable both a first transmit chain associated with a first powerline communication channel and a second transmit chain associated with a second powerline communication channel to dynamically change the operational mode from the SISO mode to the MIMO mode; and in response to determining to dynamically change (312, 316) the operational mode from the MIMO mode to the SISO mode, dynamically enable the first transmit chain associated with the first powerline communication channel and disable the second transmit chain associated with the second powerline communication channel to dynamically change the operational mode from the MIMO mode to the SISO mode. a network interface; a mode selection unit coupled with the network interface, the mode selection unit configured to: determine whether an operational mode associated with a destination powerline communication device communicatively coupled to the network interface is a multiple-input multiple-output, MIMO, mode or a single-input single-output, SISO, mode; determine whether the operational mode of the destination powerline communication device matches an operational mode of the powerline communication transmitter; determine whether an operational mode associated with a destination powerline communication device communicatively coupled to the network interface is a multiple-input multiple-output, MIMO, mode or a single-input single-output, SISO, mode; determine whether the operational mode of the destination powerline communication device matches an operational mode of the powerline communication transmitter; and characterised in that the mode selection unit is configured to dynamically change (312, 316) the operational mode of the powerline communication transmitter to either the MIMO mode or the SISO mode to match the operational mode of the destination powerline communication device in response to determining the operational mode of the destination powerline communication device does not match the operational mode of the powerline communication transmitter; and wherein the mode selection unit is further configured to: in response to determining to dynamically change (312, 316) the operational mode from the SISO mode to the MIMO mode, dynamically enable both a first transmit chain associated with a first powerline communication channel and a second transmit chain associated with a second powerline communication channel to dynamically change the operational mode from the SISO mode to the MIMO mode; and in response to determining to dynamically change (312, 316) the operational mode from the MIMO mode to the SISO mode, dynamically enable the first transmit chain associated with the first powerline communication channel and disable the second transmit chain associated with the second powerline communication channel to dynamically change the operational mode from the MIMO mode to the SISO mode. in response to determining to dynamically change (312, 316) the operational mode from the SISO mode to the MIMO mode, dynamically enable both a first transmit chain associated with a first powerline communication channel and a second transmit chain associated with a second powerline communication channel to dynamically change the operational mode from the SISO mode to the MIMO mode; and in response to determining to dynamically change (312, 316) the operational mode from the MIMO mode to the SISO mode, dynamically enable the first transmit chain associated with the first powerline communication channel and disable the second transmit chain associated with the second powerline communication channel to dynamically change the operational mode from the MIMO mode to the SISO mode.