Connections: DVI connection, 1x DVI, 1x DisplayPort, VGA connection, LAN (network card) RJ-45, 5x USB, of which 5X USB 2.0; 3.5mm audio-in, 3.5mm audio out: Suitable for: Dell Latitude Precision: M2400, M2800, M4400, M4500, M4600, M4700, M4800, M6400, M6500, M6600, M6700, M6800 and DellLatitude: E4200, E4300, E4310, E4320, E5400, E5411, E5420M, E5430, E5440, E5500, E5510, E5520, E5520M, E5540, Dell Latitude Precision: M2400, M2800, M4400, M4500, M4600, M4700, M4800, M6400, M6500, M6600, M6700, M6800 Latitude: E4200, E4300, E4310, E4320, E5400, E5411, E5420M, E5430, E5440, E5500, E5510, E5520, E5520M, E5540, Although Dell himself (and therefore as well as) recommends to take an original power supply with at least 6.7A, better 12.7a, otherwise it can happen that some USBs will get insuffic.
eBay