Sierra Wireless AirLink LS300 GX440 GX400 Modem DC Power Cable Only - 2000380 DC power cable for the RV50 ES440, GX400, GX440, ES450 GX450 MP70 and LS300 cellular modems. 4 pin Molex: 2 power, 1 gnd, 1 I/O. End bare wire