A module system comprising: a baseboard comprising: a controller; and an expansion connector connected to the controller; and a daisy chain of a plurality of expansion modules and wherein: each expansion module of the N expansion modules comprises: a multi-port hub (31, 41, 51, 61); and one or more devices (34, 44, 54, 64) connected to the multi-port hub (31, 41, 51, 61); wherein the 1st expansion module has a first port of its multiport hub connected to the expansion connector; wherein each expansion module n of the second through N -1 expansion modules has a first port of its multiport hub (31, 41, 51, 61) connected to a preceding expansion module and a second port connected to a first port of a succeeding expansion module; wherein a preceding expansion module is an texpansion module n-1 and wherein a succeeding expansion module is an expansion module n+1 of a module n; wherein the Nth expansion module has a first port of its multiport hub (41, 51, 61) connected to the preceding (N-1) expansion module; wherein for each of the N expansion modules (11, 12, 13, 14): the multi-port hub modules has a third port connected to the one or more devices (34, 44, 54, 64); the multi-port hub (31, 41, 51, 61) is a universal serial bus hub; and the one or more devices (34, 44, 54, 64) are USB devices; characterised in that the baseboard further comprises a pre-regulated voltage source; in that each of the N expansion modules (11, 12, 13, 14) further comprises a voltage line (32, 42, 52, 62), a voltage regulator (33, 43, 53, 63) having an output connected to the multi-port hub (31, 41, 51, 61) and to the one or more devices (34, 44, 54, 64) of the respective expansion module, the voltage regulator (33, 43, 53, 63) being connected to the voltage line (32, 42, 52, 62) of the respective expansion module; and in that the voltage line (42, 52, 62) of each of 2nd to Nth expansion modules (12, 13, 14) is connected to the voltage line (32, 42, 52) of the preceding expansion module (11, 12, 13) and the voltage line of the first expansion module is connected to the pre-regulated voltage source. a baseboard comprising: a controller; and an expansion connector connected to the controller; and a daisy chain of a plurality of expansion modules and wherein: each expansion module of the N expansion modules comprises: a multi-port hub (31, 41, 51, 61); and one or more devices (34, 44, 54, 64) connected to the multi-port hub (31, 41, 51, 61); a controller; and an expansion connector connected to the controller; and a daisy chain of a plurality of expansion modules and wherein: each expansion module of the N expansion modules comprises: a multi-port hub (31, 41, 51, 61); and one or more devices (34, 44, 54, 64) connected to the multi-port hub (31, 41, 51, 61); a multi-port hub (31, 41, 51, 61); and one or more devices (34, 44, 54, 64) connected to the multi-port hub (31, 41, 51, 61); wherein the 1st expansion module has a first port of its multiport hub connected to the expansion connector; wherein each expansion module n of the second through N -1 expansion modules has a first port of its multiport hub (31, 41, 51, 61) connected to a preceding expansion module and a second port connected to a first port of a succeeding expansion module; wherein a preceding expansion module is an texpansion module n-1 and wherein a succeeding expansion module is an expansion module n+1 of a module n; wherein the Nth expansion module has a first port of its multiport hub (41, 51, 61) connected to the preceding (N-1) expansion module; wherein for each of the N expansion modules (11, 12, 13, 14): the multi-port hub modules has a third port connected to the one or more devices (34, 44, 54, 64); the multi-port hub (31, 41, 51, 61) is a universal serial bus hub; and the one or more devices (34, 44, 54, 64) are USB devices; the multi-port hub modules has a third port connected to the one or more devices (34, 44, 54, 64); the multi-port hub (31, 41, 51, 61) is a universal serial bus hub; and the one or more devices (34, 44, 54, 64) are USB devices; characterised in that the baseboard further comprises a pre-regulated voltage source; in that each of the N expansion modules (11, 12, 13, 14) further comprises a voltage line (32, 42, 52, 62), a voltage regulator (33, 43, 53, 63) having an output connected to the multi-port hub (31, 41, 51, 61) and to the one or more devices (34, 44, 54, 64) of the respective expansion module, the voltage regulator (33, 43, 53, 63) being connected to the voltage line (32, 42, 52, 62) of the respective expansion module; and in that the voltage line (42, 52, 62) of each of 2nd to Nth expansion modules (12, 13, 14) is connected to the voltage line (32, 42, 52) of the preceding expansion module (11, 12, 13) and the voltage line of the first expansion module is connected to the pre-regulated voltage source. in that the baseboard further comprises a pre-regulated voltage source; in that each of the N expansion modules (11, 12, 13, 14) further comprises a voltage line (32, 42, 52, 62), a voltage regulator (33, 43, 53, 63) having an output connected to the multi-port hub (31, 41, 51, 61) and to the one or more devices (34, 44, 54, 64) of the respective expansion module, the voltage regulator (33, 43, 53, 63) being connected to the voltage line (32, 42, 52, 62) of the respective expansion module; and in that the voltage line (42, 52, 62) of each of 2nd to Nth expansion modules (12, 13, 14) is connected to the voltage line (32, 42, 52) of the preceding expansion module (11, 12, 13) and the voltage line of the first expansion module is connected to the pre-regulated voltage source.